Cleanup HTML code to be more W3C compliant.

Cédric RICARD
1 parent d17b1121
Showing 3 changed files with 2465 additions and 2459 deletions Show diff stats
calexium_lib/web/CXM_html.anubis
calexium_lib/web/CXM_making_a_web_site.anubis
calexium_lib/web/CXM_multihost_http_server.anubis
-
- *Project*                            The Anubis Project
- *Title*                         Producing HTML/Javascript code. 
-
- *Copyright*                    Copyright (c) Alain Prouté 2001. 
- 
-read tools/basis.anubis
-
-
-
-
-   *** Managing Web Arguments.
-
-   When a client submits a form, he  sends informations to the server. This information is
-   transformed by the server into a list of data of type 'Web_arg'. This is the reason why
-   a 'web page' operation always has a unique argument of type 'List(Web_arg)'.
-
-   The type 'Web_arg' is defined in 'web/common.anubis' as follows:
-     
-         public type Web_arg:
-           web_arg(String name, 
-                   String value),
-           upload (String name, 
-                   String value, 
-                   String temp_file_path). 
-
-read web/CXM_common.anubis   
-   
-   In other words, a  'web argument' is just a pair made of the  name of the argument, and
-   the value of  the argument, and both are character strings.  'upload' will be explained
-   later.
-
-
-   The next variable is a multipurpose counter (used to generate unique names). 
-   
-variable Int32 web_count = 0.
-
-define Int32
-  new_web_count 
-    =
-  web_count <- *web_count+1; 
-  *web_count. 
-   
-
-   Names for Web colors.
-   
-public type Web_color_name:
-  aliceblue,
-  antiquewhite1,
-  antiquewhite2,
-  antiquewhite3,
-  antiquewhite4,
-  aquamarine1,
-  aquamarine2,
-  aquamarine3,
-  aquamarine4,
-  azure1,
-  azure2,
-  azure3,
-  azure4,
-  yellow. 
-
-
-  and so on ...  (see below why I did not do more).
-
-
-
-   Web colors.
-   
-public type Web_color:
-  rgb(Int32,Int32,Int32),    /* give the color by its components */ 
-  _(Web_color_name).         /* or by its name */ 
-
-
-   
-   
-   The following produces '<meta>' tags, which are put in the head of the document. 
-   
-public type WebMeta:
-  keywords(List(String)), 
-  refresh(String url, Int32 delay),                // in seconds
-  meta(String name, String content),
-  http_equiv(String name, String content). 
-   
-   
-   
-   
-   
-                *******************************************************
-                *                      Web items                      *
-                *   (the many kinds of things one may put in a page)  *
-                *******************************************************
-
-   
-public type Web_item:
-  [ ],           /* empty (invisible) item */
-  ... this is a cross recursive type. 
-
-
-   
-  
-   Options for web page body.
-   
-public type LayerDisposition:
-  horizontal, 
-  vertical.
-   
-public type FollowPathCommand:    // this type is used by the Web_body_option 'follow_path'. 
-  pos(Int32 x,                    // x coordinate of position
-      Int32 y,                    // y coordinate of position
-      Int32 image_number,         // the image to display at that position
-      Int32 delay).               // wait that milliseconds before leaving this position
-      
-public type Web_body_option:
-  background_color(Web_color),               /* color for the background */
-   //
-   // 'psychedelic_background' produces a background color which is continuously changing.
-   // 'average' is the average luminosity of the color. 'amplitude' is the maximal variation 
-   // the luminosity around the average. 'delay' is the number of milliseconds between two
-   // color changes. For example, you may try 'psychedelic_background(200,50,1000)', which
-   // produces a background whose color changes very slowly (this is not tiring) among rather
-   // light pastel colors. 
-   //
-  psychedelic_background(Int32 average,      /* average light (0 to 255) */
-                         Int32 amplitude,    /* amplitude of variation of light */
-                         Int32 delay),       /* in milliseconds */
-  background_image(String file_name),        /* name of image file for the background */
-   //
-   // 'scrolling_layer' produces a layer above the page which is scrolling continuously either
-   // vertically or horizontally. The 'content' is indefinitly repeated. 
-   //
-  scrolling_layer(LayerDisposition,       
-                  Int32 steps,               /* number of pixels of each move */ 
-                  Int32 margin,              /* measured from left or top in pixels */ 
-                  Int32 delay,               /* milliseconds for one move */
-                  Web_item content,          /* content of layer (will be repeated) */ 
-                  Int32 period),             /* number of pixels between two instances of 'content' */ 
-   //
-   // 'bounce' shows its content above the page and let it move and bounce on the edges of a rectangle.
-   // The rectangle is determined by the last 4 arguments. 
-   //
-  bounce(Web_item content,
-         Int32 left,
-         Int32 right,
-         Int32 top,
-         Int32 bottom),
-   //
-   // put something over the page in any position you want:
-   //
-  over(Web_item content, 
-       Int32 left,
-       Int32 top), 
-   //
-   // follow_path: let a changing image follow a path on the screen. This gadget shows
-   //   an image following a polygonal path on the screen. The image may change at regular
-   //   intervals, thus providing extra animation. The images are displayed in the order
-   //   they are given in the first argument. When the last image has been displayed, the
-   //   first image is displayed again, and so on. The path is a sequence of absolute positions
-   //   on screen (actually in the browser's window or frame), which is followed in the 
-   //   order given in the 'path' argument. If 'loop' is true, the path is followed again and again. 
-   //   Otherwise, it is followed only once. If you want to make a closed loop, the last
-   //   position must be the same as the first one. 'steps' is the number of pixels of distance
-   //   between two successive positions of the image, and 'delay' the number of milliseconds
-   //   between two successive positions. 'change_every' is the number of steps (a 'step' is
-   //   passing from one position to the next one) after which the displayed image is replaced
-   //   by the next image. 
-   //
-   //   Each position 'pos(x,y,i,d)' has 4 parameters. 'x' and 'y' are the coordinates of the
-   //   position in the browser's window or frame. 'i' is the number of the image to display
-   //   at this position (i.e. the rank of the image in the list 'filename'. The first one has
-   //   rank 0). 'd' is the delay in milliseconds to wait before leaving that position. 
-   //
-  follow_path(List(String) filenames,     /* the changing images which follows the path */ 
-              Int32 change_every,         /* number of steps betwen two changes */ 
-              List(FollowPathCommand) path,       /* the polygonal path and commands */ 
-              Bool loop,                  /* if true do it repeatedly, otherwise only once */ 
-              Int32 steps,                /* approximative distance (in pixels) between two 
-                                               successive positions */ 
-              Int32 delay),               /* milliseconds between two successive positions */ 
-   
-  load_image(String name),                /* load an image (for next page), which is not displayed */ 
-  left_margin(Int32),                     /* left margin for document */ 
-  top_margin(Int32),                      /* top margin for document */ 
-  margin_width(Int32), 
-  margin_height(Int32), 
-  reload_frame(String name,       /* name of target frame */
-               String url),       /* url to load in this frame */ 
-  onload(String function_name).    /* nom de la fonction javascript (sans les '()') */
-
-public type BodyOnload:
-  reload_frame(String name, String url). 
-   
-variable List(BodyOnload) body_onloads = [ ]. 
-
-define One
-  add_body_onload
-    (
-      BodyOnload item
-    ) =
-  body_onloads <- [item . *body_onloads]. 
-   
-define Printable_tree
-  format
-    (
-      BodyOnload item
-    ) =
-  if item is 
-    {
-      reload_frame(name,url) then (Printable_tree)
-        [ " window.open('",url,"','",name,"');" ]
-    }.
-   
-define Printable_tree
-  format
-    (
-      List(BodyOnload) l
-    ) =
-  if l is 
-    {
-      [ ] then (Printable_tree)[ ], 
-      [h . t] then (Printable_tree)
-        [format(h) . format(t)]
-    }.
-   
-
----- Body of a web page. --------------------------------------------
-public type Page_body:  
-  body(List(Web_body_option),   /* list of body options */
-       Web_item content).       /* the content of the page */ 
-
-
-public type VFrame:
- frame(Int32 height, 
-       Printable_tree url,
-       String name). 
-   
----- Web pages. -----------------------------------------------------
-public type Web_page: 
-  web_page(String title,             /* title appearing on top of browser */
-           List(WebMeta) meta_tags,
-           Printable_tree  head_scripts, /* scripts à placer dans la balise head */
-           Page_body body),          /* body of page */ 
-  standard_frameset(String title,
-                    List(WebMeta) meta_tags, 
-                    Int32 height,             /* height of 'top menu' (pixels) */ 
-                    Int32 width,              /* width of 'left menu' (pixels) */ 
-                    Printable_tree main).     /* url for main */ 
-
-   +---------+--------------------------+
-   |         |                ^         |
-   |<-width->|      top     height      |
-   |         |                v         |
-   | left    +--------------------------+
-   |         |                          |
-   |         |     main                 |
-   |         |                          |
-   |         |                          |
-   |         |                          |
-   +---------+--------------------------+
-   
-   Note: top and left frames must be loaded through the Web_body_option 'reload_frame'. 
-   
-
-public define Web_page
-  web_page
-    (
-      String title, 
-      Page_body body
-    ) =
-  web_page(title,[],[], body). 
-
-public define Web_page
- web_page
-   (
-    String          title,
-    List(WebMeta)   meta_tags,
-    Page_body       body
-   ) =
-
- web_page(title, meta_tags, [], body).
-
- public define Web_page
-web_page
-  (
-   String         title,
-   Printable_tree head_scripts,
-   Page_body      body
-  ) =
-
-  web_page(title, [], head_scripts, body).
-
-public define Web_page
-standard_frameset
-    (
-      String title,
-      Int32 height, 
-      Int32 width,  
-      Printable_tree main
-    ) =
-
- standard_frameset(title, [], height, width, main).
-   
-   
-variable Printable_tree scripts = []. 
-   
-define One
-  add_script
-    (
-      Printable_tree script
-    ) =
-  scripts <- [*scripts . script]. 
-   
-   
-   
-   ---- Non empty web items. -------------------------------------------
-
-   We have already seen the empty web item. Together with the following one, it enables to
-   make (pseudo-)lists  of web items,  which will be  presented one after the  other (from
-   left to right) in the browser's window.
-
-public type Web_item:
-  [Web_item . Web_item],...
-
-
-   A web item may be a simple string or a simple integer:
-
-public type Web_item:
-  text(String),          
-  text_pt(Printable_tree), 
-  text_nowrap(String),          
-  text_nowrap_pt(Printable_tree), 
-  par(String),
-  preformated_text(String text), 
-  integer(Int32),
-  float(Float,Int32),...
-
-
-   You may want to center a web item in a page. Just enclose it into
-   'center(...)': 
-
-public type Web_item:
-  center(Web_item),...
-
-
-   You may want to write characters of a given item with a big font:
-
-public type Web_item:
-  bigger(Int32,Web_item), 
-  smaller(Int32,Web_item), 
-  bold(Web_item),
-  italic(Web_item), 
-  big(Web_item),
-  very_big(Web_item),...
-
-   
-   Most of the previous are subsumed by 'style':
-   
-public type WebStyle:
-  background_image(String file_name),
-  background_color(Web_color color), 
-  background_transparent, 
-  background_repeat_horizontal,    // repeat the background image only horizontally
-  background_repeat_vertical,
-  background_no_repeat, 
-  color(Web_color color), 
-  float_to_left,      // the web item will float to the left and text will wrap around 
-  float_to_right,
-  font_family(String font_name),   // "verdana" "helvetica" "times" etc...
-  font_size(Int32 size), 
-  italic,
-  oblique,
-  small_capitals, 
-  bold, 
-  bolder,
-  lighter,
-  line_height(Int32 height),
-  text_center,
-  text_left,
-  text_right,
-  text_justify,
-  text_underline,
-  text_blink,
-  text_line_through,
-  width(Int32 n).
-   
-  
-   
-public type Web_item:
-  style(List(WebStyle) styles, Web_item content),...
-   
-   
-public type Web_item:
-  spacer(Int32 width, Int32 height), 
-  image(String file_name),              /* image */ 
-  image_d(String file_name, String description), 
-  image_pt(Printable_tree file_name),
-  on_image(String file_name, Web_item content),
-  turning_images(NonEmptyList(String) filenames, Int32 millisecs),...
-   
-   
-   
-   A 'rollover' has  the same role as a submit  button or link, but it  is prettier. It is
-   made of two images.  The first one  'image_on' determines the aspect of the button when
-   the mouse  cursor is on  it.  The  other one 'image_off'  determines the aspect  of the
-   button when  the mouse cursor is  anywhere else. The two  images should be  of the same
-   size, otherwise bad  effects may occur. The last operand 'description'  is a small text
-   which describes the role of the button. It appears in a bubble in the browser's window.
-   
-public type Web_item:   
-  rollover(List(String) preload_images,   // images to preload before the rollover is effective
-           String url,                    // URL with possible web arguments
-           String target, 
-           String image_on,               // file name of 'highlighted' image 
-           String image_off,              // file name of 'non highlighted' image
-           String description),           // short behavior description
-  rollover(List(String) preload_images, 
-           String url,    
-           String target,        
-           String image_on,         
-           String image_off,        
-           Int32 width, 
-           Int32 height, 
-           String description), ... 
-   
-
-   Mouse  sensitive images  are images  with predefined  zones which  are  clickable. When
-   clicking in a  zone, the specified corresponding  URL is loaded by the  browser. If two
-   zones overlap, the first one (in the order they are defined) is selected.
-   
-   Zones  are of  3  sorts: rectangles,  circles  and polygons.   Point's coordinates  are
-   specified as  pairs of  integers (of anonymous  agglomeration type  (Int32,Int32)). The
-   first coordinate counts pixels from the left of the image. The second coordinate counts
-   pixels from  the top of the  image.  With polygons,  you can construct zones  which are
-   almost as complicated as you want. You  may also construct a zone as the overlapping of
-   several zones with the same URL.
-   
-public type Mouse_Sensitive_Zone:
-  rectangle  
-    (   
-      (Int32,Int32) left_top, 
-      (Int32,Int32) right_bottom,
-      String url
-    ),
-  circle     
-    (   
-      (Int32,Int32) center,
-      Int32 radius,
-      String url
-    ),
-  polygon
-    (   
-      List((Int32,Int32)) vertices,
-      String url
-    ). 
-   
-public type Web_item:
-  mouse_sensitive_image(String image_file_name,       // the image itself
-                        List(Mouse_Sensitive_Zone) zones),...
-
-
-   In project: mouse  sensitive images, whose zones behave like  submission buttons (to be
-   used within a form).
-   
-   
-public type Web_item:
-  background_sound(String sound_file_name, 
-                   Bool loop),...
-   
-   
-
-                        *************************
-                        *         FORMS         *
-                        *************************
-
-
-   Use 'forms' in  order to get informations back from the  client. The constructor 'form'
-   take 2 arguments:
-
-    - the name of the form, which must be the name of an Anubis web
-      page. Indeed, when the user will submit the form, this page will
-      be sent to him. 
-    - the content of the form, which may be any web item, but which
-      normally (amongh other things) contains input fields and a
-      submit button.  
-
-public type Web_item:
-  form(Printable_tree  name,
-       Web_item  content),
-  form_target(Printable_tree name,
-       Web_item content,
-       String target),
-  form(Printable_tree  name, 
-       String label_name,
-       Web_item  content),
-  form_name(String          form_name,  // option name de form
-            Web_item  content),...
-
- public define Web_item
-form
- (
-  Printable_tree  name,
-  Web_item        content
- ) =
-
- form("", name, content).
-
-   Within a form, you may put 'text input fields', that the client may
-   edit. The constructor 'text_input' has the following arguments: 
-
-    - name of input field. This will be the name of the correponding
-      web argument in the Anubis web page referred to by the form. 
-    - size of field (as it appears on client screen), 
-    - initial value of field (the text that appears in the field, when
-      the client downloads the page). 
-
-
- public type Text_Input_Option
-
-public type Web_item:
-  text_input(String name,           /* text field to be documented by user */
-             Int32 size,
-             String initial_value),...
-
- public define Web_item
- text_input
-  (
-   String   name,
-   Int32    size,
-   String   initial_value
-  ) =
-
-
- text_input( (List(Text_Input_Option)) [], name, size, initial_value).
-
-
-public type Web_item:
-  password_input(String name,
-                 Int32 size),
-  text_area(String name,
-            Int32 columns, 
-            Int32 rows,
-            String initial_text), 
-  upload(String name, Int32 size),...
-
-
-
-
-public type Web_item:
-  submit(String button_text),        /* submit button with text on it */
-  submit_pt(Printable_tree button_text),
-  submit(String name, String text),
-  submit_close(String name, String text), 
-  submit_pt2(String name, Printable_tree text),
-  image_submit(String name, String image_file_name),
-  image_submit(String name, String value, String image_file, Web_item content),
-  hl_image_submit(String action_name, 
-                  String value, 
-                  String image_name, 
-                  String image_file, 
-                  String hl_image_file), 
-  text_submit(String name, String value, String text),
-  web_submit(String web_args, Web_item content),
-  button(String name, String text, String on_click_fonction, Int32 width, Int32 height),...
-
-
-public type Web_item:                         /* mark the form with an information */ 
-  mark(String name, String value),
-  mark_pt(String name, Printable_tree value),...
-
-public type Web_item:
-  close_button,                               /* button that closes the window */ 
-  close_button(String image_file_name), ...
-   
-   
-   
-                      *********************************
-                      *            LABELS             *
-                      *********************************
-   
-   
-   A 'label'  is just  a name  that you may  give to  a position in  a document.   Use the
-   following invisible  Web_item 'label' to this end.   Now, you can also  create links in
-   the same document,  which, when clicked by  the user, scroll the document,  so that the
-   position  whose name is  the given  label is  shown just  at the  top of  the browser's
-   window.
-   
-public type Web_item:
-  label(String label_name),       /* give a name to a position in the page */ 
-  go_to_label(String label_name,  /* a link for jumping to a label */ 
-              Web_item content),...
-
-
-
-                     ********************************
-                     *           TABLES             *
-                     ********************************
-
-
-   A web item may be a table. A table is produced by the constructor
-   'table' from the type 'Web_item'. This constructor takes 2
-   arguments: 
-
-    - a list of 'table options', 
-    - a list of 'table rows'. 
-
-   Of course, you use as many options as you want, including
-   none (if you do not want any option, put the empty list '[ ]' as
-   this argument). Some options have precedence over others. For example
-   a background image will hide the background color. 
-
-   Table options are defined below:
-
-public type Table_option:
-
-      /* use a color as a background for the table, if you want it to
-      be different from the background of the page */ 
-   background_color(Web_color),   
-
-      /* or use an image as the background of the table */
-   background_image(String file_name),
-
-      /* draw a border line around the table (and around each cell in
-      the table). You may also specify a geometry (in pixels) for the
-      border. This makes the 'in relief' part of the border appear
-      more or less wide. You may also specify a color for the border. */
-   border,
-   nude,           /* equivalent to 'border(0,0,0)' (below) */ 
-   border(Int32,   /* width of exterior (pixels) */ 
-          Int32,   /* width of top */
-          Int32),  /* width of interior */
-   border_color(Web_color),
-   absolute_width(Int32). 
-
-
-
-   A 'table row' is made of a list of 'row options', and a list of
-   'cells'. A 'cell' itself has a list of 'cell options', and a web item,
-   which is its content. We begin by the description of options. 
-
-
-public type Row_option:
-     /* following concerns the horizontal positions of items within the
-     cells of the row */
-   left,
-   h_center,
-   right, 
-     /* the following concerns the vertical positions of items, within
-     the cells of the row */
-   top,
-   v_center,
-   bottom,
-   absolute_height(Int32), 
-   base_line,
-     /* set the background color of all cells in the row */ 
-   background_color(Web_color).
-
-
-
-public type Cell_option:
-     /* all row options are available for individual cells, and apply
-     here only to one cell. */ 
-   left,   
-   h_center,
-   right, 
-   top,
-   v_center,
-   bottom,
-   base_line,
-   background_color(Web_color),  
-     /* you can set the width of the cell either absolutely (in pixels)
-     or as a percentage of the width of the table. */ 
-   background_image(String file_name),
-   absolute_width(Int32),
-   relative_width(Int32),
-   absolute_height(Int32),
-   relative_height(Int32),
-     /* a cell may span over several columns or rows in the table */
-   columns(Int32),
-   rows(Int32),
-   nowrap.
-
-
-public type Cell:
-   cell(List(Cell_option),
-        Web_item). 
-
-public type Table_row:
-   row(List(Row_option),
-       List(Cell)). 
-   
-public define Table_row row(Web_item i)     = row([],[cell([],i)]). 
-public define Table_row row(Cell c)         = row([],[c]). 
-public define Table_row row(List(Cell) l)   = row([],l). 
-   
-
-public type Web_item:
-  table(List(Table_option),
-        List(Table_row)),...
-
-public type Web_item: 
-  list(List(Web_item)),...
-
-public type Web_item:
-  link(String name, Web_item),
-  link(String name, String target, Web_item),...
-
-public type Web_item:
-  link_for_download(String filename, Web_item),...    // the filename is relative to the public directory
-   
-public type Web_item:
-  mail_to(String addr, Web_item),...
-
-
-public type Web_item:
-  select(String name, 
-         Int32 size, 
-         List(String) choices),
-  select(String name,
-         Int32 size,
-         List(String) choices,
-         String selected),
-  immediate_select(String name,         // selection will immediately submit the form 
-                   Int32 size,
-                   List(String) choices),...
-
-
-public type Web_item:
-  radio_button           (Printable_tree name, String value),
-  checked_radio_button   (Printable_tree name, String value),
-  check_box              (Printable_tree name, String value),
-  checked_box            (Printable_tree name, String value),...
-
-
-public type Web_item:
-  link_to_window(Printable_tree name, Web_item),
-  link_to_window(Printable_tree name, String window_name, Web_item),
-  link_to_window_with_ticket(String name, 
-                             String web_args, 
-                             String window_name, 
-                             Web_item content,
-                             Int32 width, 
-                             Int32 height), 
-  link_to_window_with_ticket_and_scroll
-                            (String name, 
-                             String web_args, 
-                             String window_name, 
-                             Web_item content,
-                             Int32 width, 
-                             Int32 height), 
-  link_to_window_with_ticket_and_scroll
-                            (String name, 
-                             String label_name, 
-                             String web_args, 
-                             String window_name,
-                             Web_item content,
-                             Int32 width, 
-                             Int32 height), 
-  link_to_frame (Printable_tree name, String frame_name, Web_item). 
-  
-
-
----- Formating operations (Anubis --> HTML/Javascript) --------------------------- 
-
-   Stupid operation formating a web color name. 
-
-public define String 
-  format
-    (
-      Web_color_name n
-    ) =
- if n is
-  {
-    aliceblue        then   "aliceblue",
-    antiquewhite1    then   "antiquewhite1",
-    antiquewhite2    then   "antiquewhite2",
-    antiquewhite3    then   "antiquewhite3",
-    antiquewhite4    then   "antiquewhite4",
-    aquamarine1      then   "aquamarine1",
-    aquamarine2      then   "aquamarine2",
-    aquamarine3      then   "aquamarine3",
-    aquamarine4      then   "aquamarine4",
-    azure1           then   "azure1",
-    azure2           then   "azure2",
-    azure3           then   "azure3",
-    azure4           then   "azure4",
-    yellow           then   "yellow",
-  }. 
-
-   Anubis really needs some system of 'macros' to avoid this...
-
-
-   Formating a web color. 
-   
-public define String
-  format
-    (
-      Web_color wc
-    ) =
-  if wc is
-    {
-      rgb(r,g,b) then "\"#" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "\"",          
-      _(c) then format(c) 
-    }. 
-
-public define String
-  format_without_quotes
-    (
-      Web_color wc
-    ) =
-  if wc is
-    {
-      rgb(r,g,b) then "#" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "",          
-      _(c) then format(c) 
-    }. 
-
-define Printable_tree
-  format
-    (
-      Web_color c
-    ) = [(String)format(c)]. 
-
-public define String
-  format_without_sharp
-    (
-      Web_color wc
-    ) =
-  if wc is
-    {
-      rgb(r,g,b) then "" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "",          
-      _(c) then format(c) 
-    }. 
-
-define Printable_tree
-  format_without_sharp
-    (
-      Web_color c
-    ) = [(String)format_without_sharp(c)]. 
-
-
-   
-define Printable_tree
-  psychedelic_bg
-    (
-      Int32 average,
-      Int32 amplitude,
-      Int32 delay
-    ) =
-  with ampl = if amplitude >= 120 then 120 else 
-              if amplitude =< 1 then 1 else amplitude, 
-  with aver = if average+ampl >= 254 then 254-ampl 
-              else if average-ampl =< 1 then 1+ampl else average,
-  [ "<script>",
-    " var psy_t = 0;",
-    " function do_psy_bg() { psy_t += 0.05;",
-    "   document.bgColor = '#' + ",
-    "  (Math.round(",aver,"+",ampl,"*Math.cos(psy_t))).toString(16) + ",
-    "  (Math.round(",aver,"+",ampl,"*Math.sin(psy_t))).toString(16) + ",
-    "  (Math.round(",aver,"-",ampl,"*Math.cos(2*psy_t))).toString(16); ",
-    " setTimeout(\"do_psy_bg()\",",delay,"); }",
-    " setTimeout(\"do_psy_bg()\",1000);", 
-    "</script>"].
-
-   
-define List(Web_body_option)
-  replace_background_init
-    (
-      List(Web_body_option) l,
-      Int32 average,
-      Int32 amplitude,
-      Int32 delay
-    ) = 
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        if h is background_color(_) 
-        then [background_color(rgb(average+amplitude,
-                                   average,
-                                   average-amplitude)) 
-              . replace_background_init(t,average,amplitude,delay)]
-        else [h . replace_background_init(t,average,amplitude,delay)]
-    }.
-   
-define Maybe((Int32,Int32,Int32))   
-  get_psy
-    (
-      List(Web_body_option) l
-    ) = 
-  if l is 
-    {
-      [ ] then failure, 
-      [h . t] then 
-        if h is psychedelic_background(a,f,d) 
-        then success((a,f,d)) 
-        else get_psy(t)
-    }.
-   
-define List(Web_body_option)
-  prepare
-    (
-      List(Web_body_option) l
-    ) =
-  if get_psy(l) is 
-    {
-      failure then l, 
-      success(op) then if op is (a,f,d) then 
-        replace_background_init(l,a,f,d)
-    }.
-   
-   
-public define Printable_tree
-  format
-    (
-      String c_ticket, 
-      String s_ticket,
-      Web_item i
-    ).   
-      
-define Printable_tree
-  move_layer_command
-    (
-      String property,
-      Int32 n,
-      Int32 num,
-      Int32 i,
-      Int32 period
-    ) =
-  if i >= num then [ ] else
-  [" if (document.layers)",
-   " { document.nslay",n,"_",i,".",property,"=layp",n,"+(",((i-1)),"); } ",
-   " else ",
-   " { ielay",n,"_",i,".style.",property,"=layp",n,"+(",(i-1)*period,"); } "
-   . move_layer_command(property,n,num,i+1,period)].
-   
-define Printable_tree
-  format_layers
-    (
-      LayerDisposition disp,
-      Int32 margin,
-      Web_item content,
-      Int32 n, 
-      Int32 num,
-      Int32 i,
-      Int32 period
-    ) =
-  if i >= num then [ ] else
-  ["<layer name=\"nslay",n,"_",i,"\" top=0",
-                           " left=0", ">",
-    "<div id=ielay",n,"_",i," style=\"position:absolute;top:",
-             if disp is vertical then (i-1)*period else margin,
-             "px;left:",
-             if disp is vertical then margin else (i-1)*period,
-             "px\">",
-       format("","",content),
-   "</div></layer>" . format_layers(disp,margin,content,n,num,i+1,period)]. 
-     
-define Printable_tree
-  s_layer
-    (
-      LayerDisposition disp,
-      Int32 steps,
-      Int32 margin,
-      Int32 delay, 
-      Web_item content,
-      Int32 period,
-      Int32 num
-    ) =
-  with n = new_web_count, 
-  [ "<script>",
-    " var layp",n," = 0;", 
-    " function scroll_layer",n,"() {",
-    " layp",n,"+=(",steps,"); if (layp",n," ",if steps > 0 then ">" else "<",
-             "= ",if steps > 0 then period else 0,
-             ")   layp",n," = ",if steps > 0 then 0 else period,";",
-    move_layer_command(if disp is vertical then "top" else "left",n,num,0,period),   
-    " setTimeout(\"scroll_layer",n,"()\",",delay,");",
-    " }",
-    " setTimeout(\"scroll_layer",n,"()\",1000);",
-    "</script>",
-    format_layers(disp,margin,content,n,num,0,period),   
-    ].
-   
-      
-define Printable_tree
-  over
-    (
-      Web_item i,
-      Int32 left, 
-      Int32 top
-    ) =
-  with n = new_web_count, 
-  [ "<layer name=\"nslay",n,"\" top=",top," left=",left,">",
-    " <div id=\"ielay",n,"\" style=\"position:absolute;top=",top,"px;left=",left,"px\">",
-    format("","",i),
-    "</div></layer>"
-    ]. 
-   
-define Printable_tree
-  bnce
-    (
-      Web_item i,
-      Int32 left, 
-      Int32 right,
-      Int32 top,
-      Int32 bottom
-    ) =
-  with n = new_web_count, 
-  [ "<script>",
-    "  var bncx",n," = ",left,"; var bncy",n," = ",top,"; var bncdx",n," = 1; var bncdy",n," = 1;", 
-    " function do_bnc",n,"() {",
-    "   if (bncx",n," >= (",right,") || bncx",n," < ",left,") bncdx",n," = -bncdx",n,";", 
-    "   if (bncy",n," >= (",bottom,") || bncy",n," < ",top,") bncdy",n," = -bncdy",n,";", 
-    "   bncx",n," += bncdx",n,"; bncy",n," += bncdy",n,";", 
-    "   if (document.layers)",
-    "     { document.nslay",n,".left = bncx",n,"; document.nslay",n,".top = bncy",n,"; } else",
-    "     { ielay",n,".style.left = bncx",n,"; ielay",n,".style.top = bncy",n,"; }",
-    " setTimeout(\"do_bnc",n,"()\",40); }", 
-    " setTimeout(\"do_bnc",n,"()\",1000);",
-    "</script>",
-    "<layer name=\"nslay",n,"\" top=",top," left=",left,">",
-    " <div id=\"ielay",n,"\" style=\"position:absolute;top=",top,"px;left=",left,"px\">",
-    format("","",i),
-    "</div></layer>"
-    ]. 
-   
-   
-define Printable_tree
-  folp_switch
-    (
-      Int32 n, 
-      Int32 i, 
-      List(FollowPathCommand) path, 
-      Bool loop,
-      Int32 steps
-    ) =
-  if path is 
-    {
-      [ ] then [ ], 
-      [p0 . t0] then if p0 is pos(x0,y0,i0,d0) then 
-        if t0 is 
-          {
-            [ ] then if loop
-                then ["        default: ",
-          "            folpx",n,"=",x0,"; folpy",n,"=",y0,"; ", 
-          "            folpseg",n,"=0; ",
-          "            folpwait",n,"=",d0,";", 
-          "   if(document.layers)",
-          "        document.nslay",n,".document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
-          "   else document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
-          "            folpstpmax",n," = 0;",
-          "            folpstp",n,"=0;", 
-          "            folpdx",n,"=0; ",
-          "            folpdy",n,"=0; ",                       
-                      "        break;"]
-                else ["        default: folpend",n,"=1; break; "], 
-            [p1 . t1] then if p1 is pos(x1,y1,i1,d1) then
-        [ "          case ",i,": ",
-          "            folpx",n,"=",x0,"; folpy",n,"=",y0,"; ", 
-          "            folpseg",n,"=",i+1,"; ",
-          "            folpwait",n,"=",d0,";", 
-          "   if(document.layers)",
-          "        document.nslay",n,".document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
-          "   else document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
-          "            folpstpmax",n," = ",
-    "Math.round(Math.sqrt(Math.pow(",x1,"-",x0,",2)+Math.pow(",y1,"-",y0,",2))/",steps,");",
-          "            folpstp",n,"=0;", 
-          "            folpdx",n,"=((",x1,"-",x0,")/folpstpmax",n,"); ",
-          "            folpdy",n,"=((",y1,"-",y0,")/folpstpmax",n,"); ", 
-          "            break; " 
-        . folp_switch(n,i+1,t0,loop,steps) ]
-    }}. 
-      
-define Printable_tree
-  set_folpimages
-    (
-      Int32 n, 
-      List(String) filenames,
-      Int32 i, 
-    ) = 
-  if filenames is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        [ " folpimages",n,"[",i,"].src=\"",h,"\";" 
-        . set_folpimages(n,t,i+1)]
-    }. 
-   
-define Printable_tree
-  follow_path
-    (
-      List(String) filenames, 
-      Int32 change_every, 
-      List(FollowPathCommand) path, 
-      Bool loop, 
-      Int32 steps,
-      Int32 delay
-    ) =
-  if filenames is 
-    {
-      [ ] then (print("Error in usage of 'follow_path': 'filenames' must be non empty."); []), 
-      [im1 . other_ims] then 
-  if steps < 1 then (print("Error in usage of 'follow_path': 'step' must be >= 1."); [ ]) else
-  if path is 
-    {
-      [ ] then [ ], 
-      [p0 . t0] then if p0 is pos(x0,y0,i0,d0) then 
-        if t0 is 
-          { 
-            [ ] then 
-              (print("Error in usage of 'follow_path': 'path' must have at least 2 positions."); []),
-            [p1 . t1] then if p1 is pos(x1,y1,i1,d1) then  
-        with n = new_web_count, 
-       [ 
-         "<layer name=\"nslay",n,"\" top=",y0," left=",x0,">",
-         "<div id=\"ielay",n,"\" style=\"position:absolute;top=",y0,"px;left=",x0,"px\">",
-         "<img src=\"",im1,"\" name=\"folpim",n,"\" border=0>",
-         "</div></layer>",
-         "<script>",
-         "  var folpimages",n,"=new Array(",length(filenames),");", 
-         "  var folpcurim",n,"=0;", 
-         "  var folpx",n," = ",x0,";", 
-         "  var folpy",n," = ",y0,";", 
-         "  var folpseg",n," = 1;", 
-         "  var folpstpmax",n," = ",
-   "Math.round(Math.sqrt(Math.pow(",x1,"-",x0,",2)+Math.pow(",y1,"-",y0,",2))/",steps,");", 
-         "  var folpdx",n,"=((",x1,"-",x0,")/folpstpmax",n,"); ",
-         "  var folpdy",n,"=((",y1,"-",y0,")/folpstpmax",n,"); ", 
-         "  var folpstp",n," = 0;", 
-         "  var folpchgcnt",n," = 0;", 
-         "  var folpwait",n,"=",d0,";",
-         "  var folpend",n,"=0;", 
-         "  for(var i = 0; i<",length(filenames),"; i++) {",
-         "    folpimages",n,"[i]=new Image(); }", 
-         set_folpimages(n,filenames,0), 
-         "  function dofolp",n,"() {", 
-         "    if (folpstp",n," >= folpstpmax",n,")",
-         "      { switch(folpseg",n,") {",
-         folp_switch(n,0,path,loop,steps),
-         "      }} else { folpstp",n,"++; folpx",n," += folpdx",n,"; folpy",n," += folpdy",n,"; };", 
-         "  if (document.layers)",
-         "  { document.nslay",n,".left=folpx",n,"; document.nslay",n,".top=folpy",n,"; } else",
-         "  { ielay",n,".style.left=folpx",n,"; ielay",n,".style.top=folpy",n,"; };",
-   
-         //--- change image if needed:
-         if change_every = 0 then [ ] else 
-         if length(filenames) =< 1 then [ ] else
-         ["  if (folpchgcnt",n,"==",change_every,") ",
-          "    { ", 
-          "      folpchgcnt",n,"=0;",
-          "      folpcurim",n,"++;", 
-          "      if (folpcurim",n,"==",length(filenames),") folpcurim",n,"=0;", 
-          "  if (document.layers) ",
-          "       document.nslay",n,".document.folpim",n,".src=folpimages",n,"[folpcurim",n,"].src;",
-          "  else document.folpim",n,".src=folpimages",n,"[folpcurim",n,"].src;",
-          "    }",
-          "    else { folpchgcnt",n,"++; };"],
-   
-         "  if (!folpend",n,")",
-         "    if (folpstp",n,") setTimeout(\"dofolp",n,"()\",",delay,"); ",
-         "    else setTimeout(\"dofolp",n,"()\",",delay,"+folpwait",n,"); ",
-         "     }",
-         "  setTimeout(\"dofolp",n,"()\",1000);", 
-         "</script>",
-         ]
-    }}}. 
-
-   
-public type ImageToLoad:
-  simple(String image_name),
-  with_rollover(String image_name,
-                String rollover_name). 
-   
-variable List(ImageToLoad) images_to_load = [].    
-   
-public define Printable_tree
-  format
-    (
-      Web_body_option o
-    ) =
-  if o is
-    {
-      background_color(c)                then [" bgcolor=" , (String)format(c)],
-      psychedelic_background(a,f,d)      then add_script(psychedelic_bg(a,f,d)); [ ], 
-      background_image(n)                then [" background=", n],
-      scrolling_layer(disp,st,m,t,c,p)   then add_script(s_layer(disp,st,m,t,c,p,2000/p)); [ ], 
-      bounce(i,l,r,t,b)                  then add_script(bnce(i,l,r,t,b)); [ ], 
-      over(i,l,t)                        then add_script(over(i,l,t)); [ ],
-      follow_path(li,ns,p,l,s,d)         then add_script(follow_path(li,ns,p,l,s,d)); [ ], 
-      load_image(n)                      then images_to_load <- [simple(n) . *images_to_load]; [ ], 
-      left_margin(n)                     then [" leftmargin=", n],
-      top_margin(n)                      then [" topmargin=", n],
-      margin_width(n)                    then [" marginwidth=", n],
-      margin_height(n)                   then [" marginheight=", n],
-      reload_frame(n,url)                then add_body_onload(reload_frame(n,url)); [ ],
-      onload(n)                          then [" onLoad=\"", n, "()\""] 
-    }.
-
-define Printable_tree
-  preload_list
-    (
-      List(ImageToLoad) images,
-      Int32 n, 
-    ) =
-  if images is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        ["   preloaded_images[",n,"].src = '",image_name(h),"';",
-         if h is 
-           {
-             simple(_) then [],
-             with_rollover(n1,r) then 
-               ["   preloaded_images[",n1,"].onload = 'allow_rollover(\"",r,"\")';"]
-           }
-         . preload_list(t,n-1)]
-    }.
-
-define Printable_tree 
-  load_image_script
-    (
-      List(ImageToLoad) images
-    ) =
-  if images is 
-    {
-      [ ] then [ ], 
-      [_ . _] then 
-        [
-          "<script>",
-          "  var preloaded_images = new Array(",length(images),");", 
-          "  var pi_i = 0;", 
-          "  for(pi_i = 0; pi_i < ",length(images),"; pi_i++) {", 
-          "    preloaded_images[pi_i] = new Image(); }",
-          "  function preload_images() {",
-          preload_list(images,length(images)-1), 
-          "     }</script>"
-        ]
-    }.
-
-   
-public define Printable_tree format(String c_ticket, 
-                                    String s_ticket, 
-                                    Web_item i). 
-
-
-public define Printable_tree
- format(List(Table_option) l) =
-  if l is 
-    {
-      [ ] then [ ],
-      [h . t] then [if h is 
-         {
-           background_color(c) then [" bgcolor=", (String)format(c)],
-           background_image(f) then [" background=",f],
-           border              then [" border"],
-           nude                then [" border=\"0\" cellspacing=\"0\" cellpadding=\"0\""],
-           border(e,top,i)     then [" border=",e," cellspacing=",top," cellpadding=",i],
-           border_color(c)     then [" bordercolor=", (String)format(c)],
-           absolute_width(n)   then [" width=",n]
-         }, format(t)]
-    }. 
-
-
-
-public define Printable_tree
-  format(List(Row_option) l) =
-    if l is
-      {
-        [ ] then [ ], 
-        [first . others] then [if first is
-                                 {
-                                   left       then [" align=left"],
-                                   h_center   then [" align=center"],
-                                   right      then [" align=right"],
-                                   top        then [" valign=top"],
-                                   v_center   then [" valign=center"],
-                                   bottom     then [" valign=bottom"],
-                           absolute_height(n) then [" height=\"",n,"\""], 
-                                   base_line  then [" valign=baseline"],
-                                   background_color(c) then [" bgcolor=",(String)format(c)]
-                                 },
-                               format(others)]
-      }.
-
-
-
-
-public define Int32
-  percentage(Int32 n) =
-         if n < 0 then 0 
-    else if n > 100 then 100
-    else n. 
-
- public define Int32 percentage(Int32 n) = n. 
-
-
-
-
-public define Printable_tree
-  format
-    (
-      List(Web_body_option) l
-    ) =
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then [format(h) . format(t)]
-    }.  
-
-
-
-
-public define Printable_tree
-  format(List(Cell_option) l) =
-    if l is
-      {
-        [ ] then [ ],
-        [first . others] then 
-          [if first is
-             {
-               left                then (Printable_tree)[" align=left"],
-               h_center            then (Printable_tree)[" align=center"],
-               right               then (Printable_tree)[" align=right"],
-               top                 then (Printable_tree)[" valign=top"],
-               v_center            then (Printable_tree)[" valign=center"],
-               bottom              then (Printable_tree)[" valign=bottom"],
-               base_line           then (Printable_tree)[" valign=baseline"],
-               background_color(c) then (Printable_tree)[" bgcolor=",(String)format(c)],
-               background_image(n) then (Printable_tree)[" style=\"background: url(",n,")\""],
-               absolute_width(w)   then (Printable_tree)[" width=",w],
-               relative_width(r)   then (Printable_tree)[" width=",percentage(r),""],
-               absolute_height(h)  then (Printable_tree)[" height=",h],
-               relative_height(r)  then (Printable_tree)[" height=",percentage(r),""],
-               columns(n)          then (Printable_tree)[" colspan=",n],
-               rows(n)             then (Printable_tree)[" rowspan=",n],
-               nowrap              then (Printable_tree)[" nowrap"]           
-             }
-          . format(others)]
-      }.
-
-
-
-public define Printable_tree
-  format
-    (
-      String c_ticket, 
-      String s_ticket, 
-      List(Cell) l
-    ) =
-   if l is
-     {
-       [ ] then [ ], 
-       [first . others] then 
-         [if first is cell(options,item) then 
-          ["<td",format(options),">",
-           format(c_ticket,s_ticket,item),"</td>"],
-          format(c_ticket,s_ticket,others)]
-     }.
-
-
-public define Printable_tree
- format
-   (
-     String c_ticket, 
-     String s_ticket, 
-     List(Table_row) l
-   ) =
-  if l is
-    {
-      [ ] then [ ], 
-      [first_row . other_rows] 
-        then [if first_row is
-                          {
-                     row(options,cells) then
-                          [ "<tr",format(options),">",
-                            format(c_ticket,s_ticket,cells),"</tr>"]
-                          },
-              format(c_ticket,s_ticket,other_rows)]                    
-    }. 
-
-
-public define Printable_tree
-  format_choices
-    (
-      List(String) l
-    ) =
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then ["<option>",h . format_choices(t)]
-    }.
-
-
-public define Printable_tree
-  format_choices
-    (
-      List(String) l,
-      String selected
-    ) =
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then if h = selected 
-        then ["<option selected>",h . format_choices(t)]
-        else ["<option>",h . format_choices(t,selected)]
-    }.
-
-
-public define Printable_tree 
-  format_list
-    (
-      String c_ticket,
-      String s_ticket, 
-      List(Web_item) l
-    ) =
-  if l is
-    {
-      [ ] then [ ],
-      [h . t] then ["<li>",format(c_ticket,s_ticket,h),
-                           format_list(c_ticket,s_ticket,t)]
-    }.
-
-   
-public define String
-  format
-    (
-      WebStyle ws
-    ) =
-  if ws is 
-    {
-      background_image(fn)          then "background: url("+fn+")",
-      background_color(c)           then "background: "+format(c),
-      background_transparent        then "background: transparent",
-      background_repeat_horizontal  then "background: repeat-x",
-      background_repeat_vertical    then "background: repeat-y",
-      background_no_repeat          then "background: no-repeat",
-      color(wc)                     then if wc is 
-                                       {
-                                         rgb(r,g,b) then "color: rgb("+r+","+g+","+b+")",
-                                         _(c)       then "color: "+format(c)
-                                       },
-      float_to_left                 then "float: left",
-      float_to_right                then "float: right",
-      font_family(n)                then "font-family: "+n,
-      font_size(n)                  then "font-size: "+integer_to_string(n)+"pt",
-      italic                        then "font-style: italic",
-      oblique                       then "font-style: oblique",
-      small_capitals                then "font-variant: small-caps",
-      bold                          then "font-weight: bold",
-      bolder                        then "font-weight: bolder",
-      lighter                       then "font-weight: lighter",
-      line_height(h)                then "line-height: "+integer_to_string(h),
-      text_center                   then "text-align: center",
-      text_left                     then "text-align: left",
-      text_right                    then "text-align: right",
-      text_justify                  then "text-align: justify",
-      text_underline                then "text-decoration: underline",
-      text_blink                    then "text-decoration: blink",
-      text_line_through             then "text-decoration: line-through",
-      width(n)                      then "width: "+integer_to_string(n),
-    }. 
-   
-   
-public define Printable_tree
-  format
-    (
-      List(WebStyle) l
-    ) =
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        if t is 
-          {
-            [ ]     then [format(h)], 
-            [_ . _] then [format(h), "; " . format(t)]
-          }
-    }.
-   
-   
-define Printable_tree
-  format_polygon_coordinates
-    (
-      List((Int32,Int32)) vertices
-    ) =
-  if vertices is 
-    {
-      [ ] then [ ],
-      [h . t] then  
-        if h is (x,y) then 
-          if t is [] 
-          then [ x,",",y ] 
-          else [ x,",",y,"," . format_polygon_coordinates(t)]
-    }.
-   
- define Printable_tree
-  format
-    (
-      List(Mouse_Sensitive_Zone) zones
-    ) =
-  if zones is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        [
-          if h is 
-           {
-             rectangle(lt,rb,url) then 
-               if lt is (left,top) then 
-               if rb is (right,bottom) then 
-                 [ "<area shape=rect coords=\"",left,",",top,",",right,",",bottom,
-                          "\" href=\"",url,"\">" ],
-             circle(c,r,url) then 
-               if c is (x,y) then 
-                 [ "<area shape=circle coords=\"",x,",",y,",",r,
-                          "\" href=\"",url,"\">" ],
-             polygon(vs,url) then 
-                 [ "<area shape=poly coords=\"",format_polygon_coordinates(vs),
-                          "\" href=\"",url,"\">" ]
-           }
-        . format(t)]
-    }. 
-
-define Printable_tree
-  format
-    (
-      List(Mouse_Sensitive_Zone) zones,
-      String                     c_ticket,
-      String                     s_ticket,
-    ) =
-  if zones is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        [
-          if h is 
-           {
-             rectangle(lt,rb,url) then 
-               if lt is (left,top) then 
-               if rb is (right,bottom) then 
-                 [ "<area shape=rect coords=\"",left,",",top,",",right,",",bottom,
-                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ],
-             circle(c,r,url) then 
-               if c is (x,y) then 
-                 [ "<area shape=circle coords=\"",x,",",y,",",r,
-                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ],
-             polygon(vs,url) then 
-                 [ "<area shape=poly coords=\"",format_polygon_coordinates(vs),
-                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ]
-           }
-        . format(t, c_ticket, s_ticket)]
-    }. 
-   
-variable Int32 map_number = 0. 
-
-define Printable_tree
-  format_mouse_sensitive_image
-    (
-      String image_file_name, 
-      List(Mouse_Sensitive_Zone) zones,
-      String c_ticket,
-      String s_ticket,
-    ) =
-  map_number <- (*map_number)+1; 
-  [
-    "<img src=\"",image_file_name,"\" usemap=\"#imsensmap",*map_number,"\" border=0>",
-    "<map name=\"imsensmap",*map_number,"\">",
-    format(zones, c_ticket, s_ticket),
-    "</map>"
-  ]. 
-   
-  
-   Find an 'upload' in a web item. 
-   
-define Bool
-  find_upload
-    (
-      Web_item i
-    ). 
-   
-define Bool
-  find_upload
-    (
-      List(Web_item) li
-    ) =
-  if li is 
-    {
-      [ ] then false, 
-      [h . t] then if find_upload(h) then true else find_upload(t)
-    }. 
-   
-define Bool
-  find_upload
-    (
-      Cell c
-    ) =
-  if c is cell(lo,wi) then find_upload(wi). 
-   
-define Bool
-  find_upload
-    (
-      List(Cell) lc
-    ) =
-  if lc is 
-    {
-      [ ] then false, 
-      [h . t] then if find_upload(h) then true else find_upload(t)
-    }.
-   
-   
-   
-define Bool
-  find_upload
-    (
-      Table_row tr
-    ) =
-  if tr is 
-    {
-      row(lo,lc) then find_upload(lc)
-    }. 
-   
-define Bool
-  find_upload
-    (
-      List(Table_row) l
-    ) =
-  if l is 
-    {
-      [ ] then false, 
-      [h . t] then 
-        if find_upload(h) then true else find_upload(t)
-    }. 
-   
-define Bool
-  find_upload
-    (
-      Web_item wi
-    ) =
-  if wi is 
-    {
-      [ ]                        then (Bool)false, 
-      [a . b]                    then (Bool)if find_upload(a) then true else find_upload(b), 
-      text(_)                    then (Bool)false, 
-      text_pt(_)                 then (Bool)false, 
-      text_nowrap(_)             then (Bool)false, 
-      text_nowrap_pt(_)          then (Bool)false, 
-      par(_)                     then (Bool)false, 
-      preformated_text(_)        then (Bool)false,
-      integer(_)                 then (Bool)false, 
-      float(_,_)                 then (Bool)false, 
-      center(i)                  then (Bool)find_upload(i), 
-      bigger(n,i)                then (Bool)find_upload(i), 
-      smaller(n,i)               then (Bool)find_upload(i), 
-      bold(i)                    then (Bool)find_upload(i), 
-      italic(i)                  then (Bool)find_upload(i), 
-      big(i)                     then (Bool)find_upload(i), 
-      very_big(i)                then (Bool)find_upload(i), 
-      style(_,i)                 then (Bool)find_upload(i), 
-      spacer(_,_)                then (Bool)false,
-      image(_)                   then (Bool)false,
-      image_d(_,_)               then (Bool)false, 
-      image_pt(_)                then (Bool)false, 
-      on_image(_,_)              then (Bool)false, 
-      turning_images(_,_)        then (Bool)false, 
-      rollover(_,_,_,_,_,_)      then (Bool)false, 
-      rollover(_,_,_,_,_,_,_,_)  then (Bool)false, 
-      mouse_sensitive_image(_,_) then (Bool)false,
-      background_sound(_,_)      then (Bool)false, 
-      form(_,c)                  then (Bool)find_upload(c), 
-      form_target(_,c,_)         then (Bool)find_upload(c), 
-      form(_,_,c)                then (Bool)find_upload(c), 
-      form_name(_,c)             then (Bool)find_upload(c), 
-      text_input(_,_,_)          then (Bool)false,
-      password_input(_,_)        then (Bool)false, 
-      text_area(_,_,_,_)         then (Bool)false, 
-      upload(_,_)                then (Bool)true, 
-      submit(_)                  then (Bool)false, 
-      submit_pt(_)                  then (Bool)false, 
-      submit(_,_)                then (Bool)false, 
-      submit_close(_,_)          then (Bool)false, 
-      submit_pt2(_,_)                then (Bool)false, 
-      image_submit(_,_)          then (Bool)false, 
-      image_submit(_,_,_,_)      then (Bool)false, 
-      hl_image_submit(_,_,_,_,_) then (Bool)false,
-      text_submit(_,_,_)         then (Bool)false, 
-      web_submit(_,c)            then (Bool)find_upload(c), 
-      button(_,_,_,_,_)          then (Bool)false, 
-      mark(_,_)                  then (Bool)false, 
-      mark_pt(_,_)               then (Bool)false, 
-      close_button               then (Bool)false, 
-      close_button(_)            then (Bool)false, 
-      label(_)                   then (Bool)false,
-      go_to_label(_,i)           then (Bool)find_upload(i), 
-      table(_,rows)              then (Bool)find_upload(rows), 
-      list(l)                    then (Bool)find_upload(l), 
-      link(_,i)                  then (Bool)find_upload(i), 
-      link(_,_,i)                then (Bool)find_upload(i), 
-      link_for_download(n,i)     then (Bool)find_upload(i), 
-      mail_to(_,i)               then (Bool)find_upload(i), 
-      select(_,_,_)              then (Bool)false, 
-      select(_,_,_,_)            then (Bool)false,
-      immediate_select(_,_,_)    then (Bool)false, 
-      radio_button(_,_)          then (Bool)false, 
-      checked_radio_button(_,_)  then (Bool)false, 
-      check_box(_,_)             then (Bool)false, 
-      checked_box(_,_)           then (Bool)false, 
-      link_to_window(_,i)        then (Bool)find_upload(i), 
-      link_to_window(_,_,i)      then (Bool)find_upload(i), 
-      link_to_window_with_ticket(_,_,_,i,_,_) then (Bool)find_upload(i), 
-      link_to_window_with_ticket_and_scroll(_,_,_,i,_,_) then (Bool)find_upload(i), 
-      link_to_window_with_ticket_and_scroll(_,_,_,_,i,_,_) then (Bool)find_upload(i), 
-      link_to_frame(_,_,i)       then (Bool)find_upload(i),
-    }.
-   
-   
-   The next function generates "enctype=multipart/form-data" or "", depending on the presence of
-   an 'upload' in form-content. 
-   
-define String
-  enctype
-    (
-      Web_item form_content
-    ) =
-  if find_upload(form_content)
-  then "enctype=multipart/form-data"
-  else "". 
-     
-define Printable_tree
-  set_turning_images_sources
-    (
-      Int32 i, 
-      String name, 
-      List(String) filenames
-    ) =
-  if filenames is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        ["   i",name,"[",i,"].src=\"",h,"\";"
-        . set_turning_images_sources(i+1,name,t)]
-    }.
-    
-public define Printable_tree
-  format
-    (
-      String c_ticket, 
-      String s_ticket,
-      Web_item wi
-    ) = 
-  if wi is
-    {
-      [ ]            then (Printable_tree)[ ],
-
-      [a . b]        then (Printable_tree)[format(c_ticket,s_ticket,a), " ", 
-                                           format(c_ticket,s_ticket,b)],
-   
-      text(String s)                then (Printable_tree)[s],
-   
-      text_pt(Printable_tree s)     then (Printable_tree)s,
-   
-      text_nowrap(String s)         then (Printable_tree)["<table><tr><td nowrap>",s,"</td></tr></table>"],
-   
-      text_nowrap_pt(Printable_tree s) then 
-            (Printable_tree)["<table><tr><td nowrap>",s,"</td></tr></table>"],
-   
-      par(s)                        then (Printable_tree)        
-        [ "<p align=justify>", s, " </p>"],
-   
-      preformated_text(t) then (Printable_tree) ["<pre>",t,"</pre>"],
-   
-      integer(n)     then (Printable_tree)[n], 
-   
-      float(f,p)     then (Printable_tree)[float_to_string(f,p)],
-   
-      center(item)   then (Printable_tree)["<center>", format(c_ticket,s_ticket,item),"</center>"],
-   
-      bigger(n,item) then (Printable_tree)["<font size=+",n,">",format(c_ticket,s_ticket,item),"</font>"],
-   
-      smaller(n,item) then (Printable_tree)["<font size=-",n,">",format(c_ticket,s_ticket,item),"</font>"],
-   
-      bold(item)     then 
-        (Printable_tree)["<font style=\"font-weight: bold\">",format(c_ticket,s_ticket,item),"</font>"],
-   
-      italic(item)   then 
-        (Printable_tree)["<font style=\"font-style: italic\">",format(c_ticket,s_ticket,item),"</font>"],
-   
-      big(item)      then (Printable_tree)["<font size=+1>",format(c_ticket,s_ticket,item),"</font>"],
-   
-      very_big(item) then (Printable_tree)["<h1>",format(c_ticket,s_ticket,item),"</h1>"],
-   
-      style(l,i)     then 
-        (Printable_tree)["<span style=\"", format(l), "\">", format(c_ticket,s_ticket,i), "</span>"],
-
-      spacer(w,h) then (Printable_tree) 
-        ["<img src=\"spacer.gif\" width=\"",w,"\" height=\"",h,"\" border=\"0\">"], 
-   
-      image(String f)               then (Printable_tree)["<img src=\"", f,"\" border=0>"],
-   
-      image_d(fn,desc) then (Printable_tree)["<img src=\"", fn,"\" alt=\"",desc,"\" border=0>"],
-   
-      image_pt(Printable_tree l)       then (Printable_tree)["<img src=\"", l,"\" border=0>"],
-   
-      on_image(fn,x) then (Printable_tree)
-        ["<span style=\"background: url(",fn,")\">",format(c_ticket,s_ticket,x),"</span>"],
-   
-      turning_images(fns,msec) then if fns is [im0 . imo] then 
-        with name = "trni"+integer_to_string(new_web_count), n = 1+length(imo), (Printable_tree)
-        ["<script>",
-         "var i",name,"=new Array(",n,");",
-         "var n",name,"=0;", 
-         "for(var i=0; i<",n,"; i++) {", 
-         "  i",name,"[i]=new Image(); }",
-         set_turning_images_sources(0,name,(List(String))[im0 . imo]),
-   
-         "function a",name,"() {", 
-         "if (i",name,"[(n",name,"+1)%",n,"].complete)",
-         "{n",name,"=(n",name,"+1)%",n,";", 
-         "document.",name,".src=i",name,"[n",name,"].src; }",
-         "setTimeout(\"a",name,"()\",",msec,"); }",
-   
-         "setTimeout(\"a",name,"()\",",msec,");", 
-         "</script>", 
-         "<img src=\"",im0,"\" name=",name," border = 0>"], 
-      
-      rollover(prlim,url,target,ion,ioff,descr) then (Printable_tree)
-       (images_to_load <- [simple(ion) . *images_to_load]; 
-        with name = "ron_"+integer_to_string(new_web_count), 
-        ["<a target=\"",target,"\" href=\"",url,
-        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',url) then "&" else "?")),
-        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-         "\" onMouseOut=\"",name,".src='",ioff,
-         "';\" onMouseOver=\"",name,".src='",ion,"';\"><img src=\"",ioff,
-         "\" name=\"",name,"\" alt=\"",descr,"\" border=0></a>"]), 
-   
-      rollover(prlim,url,target,ion,ioff,w,h,descr) then (Printable_tree)
-       (images_to_load <- [simple(ion) . *images_to_load]; 
-        with name = "ron_"+integer_to_string(new_web_count), 
-        ["<a target=\"",target,"\" href=\"",url,
-        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',url) then "&" else "?")),
-        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-         "\" onMouseOut=\"",name,".src='",ioff,
-         "';\" onMouseOver=\"",name,".src='",ion,"';\"><img src=\"",ioff,
-         "\" name=\"",name,"\" width=\"",w,"\" height=\"",h,"\" alt=\"",descr,"\" border=0></a>"]), 
-   
-      mouse_sensitive_image(fn,lz) then (Printable_tree)  
-               format_mouse_sensitive_image(fn,lz, c_ticket, s_ticket), 
-   
-      background_sound(sfn,loop) then (Printable_tree)
-        ["<embed src=\"", sfn, "\" autostart=true loop=", if loop then "true>" else "false>"],
-   
-      form(n,c)      then (Printable_tree)
-        ["<form ",enctype(c)," method=POST action=\"", n, "\">", 
-         "<input type=hidden name=s_ticket value=\"",s_ticket,"\">",
-         "<input type=hidden name=c_ticket value=\"",c_ticket,"\">",
-          format(c_ticket,s_ticket,c),"</form>"],
-   
-      form_target(n,c,t) then (Printable_tree)
-        ["<form ",enctype(c)," method=POST action=\"", n, "\" target=\"", t, "\">", 
-         "<input type=hidden name=s_ticket value=\"",s_ticket,"\">",
-         "<input type=hidden name=c_ticket value=\"",c_ticket,"\">",
-         format(c_ticket,s_ticket,c),"</form>"],
-   
-      form(n,l,c)    then (Printable_tree)
-        ["<form ",enctype(c)," method=POST action=\"", n,"#", l, "\">", 
-         "<input type=hidden name=s_ticket value=\"",s_ticket,"\">",
-         "<input type=hidden name=c_ticket value=\"",c_ticket,"\">",
-         format(c_ticket,s_ticket,c),"</form>"],
-
-      form_name(fn,c)      then (Printable_tree)
-        [
-         // "<form ",enctype(c), "\" name=\"", fn, "\">", 
-          "<form  name=\"", fn, "\">", 
-         "<input type=hidden name=s_ticket value=\"",s_ticket,"\">",
-         "<input type=hidden name=c_ticket value=\"",c_ticket,"\">",
-          format(c_ticket,s_ticket,c),"</form>"],
-   
-      text_input(n,s,v) then (Printable_tree)
-        ["&nbsp; <input type=text name=\"", n, "\" size=", s, " value=\"", v,"\">"],
-   
-      password_input(n,s) then (Printable_tree)
-        ["&nbsp; <input type=password name=\"", n, "\" size=", s,">"],
-   
-      text_area(name,c,r,i) then (Printable_tree)
-        ["<textarea name=",name," cols=",c," rows=",r," wrap=physical>",i,"</textarea>"],
-   
-      upload(n,size) then (Printable_tree)
-       ["<input type=file size=",size," multiple name=",n,">"],
-   
-      submit(String t)              then (Printable_tree)["<input type=submit value=\"",t,"\">"],
-   
-      submit_pt(Printable_tree t)      then (Printable_tree)["<input type=submit value=\"",t,"\">"],
-   
-      submit(n, String t)           then (Printable_tree)
-        ["<input type=submit name=",n," value=\"",t,"\">"],
- 
-      submit_close(n, String t) then (Printable_tree)
-        ["<input type=submit name=",n," value=\"",t,"\" onclick=\"window.top.close();\">"],      
-   
-      submit_pt2(n, Printable_tree t)   then (Printable_tree)
-        ["<input type=submit name=",n," value=\"",t,"\">"],
-   
-      image_submit(n,ifn) then (Printable_tree)
-        ["<input type=image name=",n," src=\"",ifn,"\" border=0>"],    
-   
-      image_submit(n,v,ifn,c) then (Printable_tree)
-          ["<img src=\"",ifn,"\" onmousedown=\"document.forms[0].action='",
-               n,"=",v,"'; document.forms[0].submit();\">"],
-   
-      hl_image_submit(n,v,in,ifn,hlifn) then (Printable_tree)
-          ["<img src=\"",ifn,"\"",
-               //" name=\"",in,"\"",
-               " onMouseOver=\"this.src='",hlifn,"'\"",
-               " onMouseOut=\"this.src='",ifn,"'\"",
-               " onMouseDown=\"document.forms[0].action='",
-               n,"=",v,"'; document.forms[0].submit();\">"],
-   
-      text_submit(n,v,t)            then (Printable_tree)
-          ["<a href=\"",n,
-           (if (s_ticket = "" & c_ticket = "" & v = "") then "" else "?"),
-           (if s_ticket = "" then [ ] else ["s_ticket=",s_ticket,"&"]),
-           (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-           v,"\">",t,"</a>"],
-
-
-      web_submit(wa,i)             then (Printable_tree)
-          ["<a href=\"javascript:document.forms[0].action='",
-               wa,"'; document.forms[0].submit();\">",format(c_ticket,s_ticket,i),"</a>"],
-   
-      button(n, String t, String o, Int32 w, Int32 h)  then (Printable_tree)
-        ["<input type=button name=",n," value=\"",t,
-         "\"style=\"width=",w, ";height=", h, "\" ", "\" onclick=\"", o, "\";\">"],
-
-      mark(n, String v)             then (Printable_tree)
-        ["<input type=hidden name=",n," value=\"",v,"\">"],
-   
-      mark_pt(n, Printable_tree v)     then (Printable_tree)
-        ["<input type=hidden name=",n," value=\"",v,"\">"],
-   
-      close_button     then (Printable_tree)
-             ["<form><input type=button value=\" Fermer \" onclick=\"window.top.close();\"></form>"],
-
-      close_button(ifn)     then (Printable_tree)
-             ["<form><input type=image name=close src=\"", ifn,
-              "\" onclick=\"window.top.close();\"></form>"],
-
-/*
-      close_button(ifn)     then (Printable_tree)
-             ["<form><input type=button name=close src=\"", ifn,
-              "\" onclick=\"window.top.close();\"></form>"],
-*/   
-      label(name) then (Printable_tree)["<a name=\"",name,"\">"],
-   
-      go_to_label(name,content) then (Printable_tree)["<a href=#",name,">",
-            format(c_ticket,s_ticket,content),"</a>"], 
-   
-      table(ops,rows)  then (Printable_tree)["<table ",
-                                  format(ops), ">",format(c_ticket,s_ticket,rows),"</table>"],
-   
-      list(l)   then (Printable_tree)["<ul>",format_list(c_ticket,s_ticket,l),"</ul>"],
-   
-      link(name,i)    then (Printable_tree)["<a href=\"",name,
-        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',name) then "&" else "?")),
-        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-        (if s_ticket = "" then [ ] else [if c_ticket = "" then "" else "&","s_ticket=",s_ticket]),
-        "\">",format(c_ticket,s_ticket,i),"</a>"],
-   
-      link(name,target,i)    then (Printable_tree)["<a target=\"",target,"\" href=\"",name,
-        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',name) then "&" else "?")),
-        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-        "\">",format(c_ticket,s_ticket,i),"</a>"],
-   
-      link_for_download(fname,i) then (Printable_tree)
-        ["<a href=\"",fname,"?download\">",format(c_ticket,s_ticket,i),"</a>"],
-   
-      mail_to(addr,i) then (Printable_tree)["<a href=\"mailto:",addr,"\">",
-          format(c_ticket,s_ticket,i),"</a>"],
-   
-      select(name,size,choices) then (Printable_tree)
-         ["<select name=",name," size=",size,">",format_choices(choices),"</select>" ],
-   
-      select(name,size,choices,selected) then (Printable_tree)
-         ["<select name=",name," size=",size,">",format_choices(choices,selected),"</select>" ],
-   
-      immediate_select(name,size,choices) then (Printable_tree)
-         ["<select name=",name," size=",size," onchange=\"submit();\">",
-              format_choices(choices),"</select>" ],
-   
-      radio_button(n,v)           then (Printable_tree)
-        ["<input type=radio name=", n, " value=\"", v, "\">"],
-   
-      checked_radio_button(n,v)   then (Printable_tree)
-        ["<input type=radio checked name=", n, " value=\"", v, "\">"],
-   
-      check_box(n,v)              then (Printable_tree)
-        ["<input type=checkbox name=", n, " value=\"", v, "\">"],
-   
-      checked_box(n,v)            then (Printable_tree)
-        ["<input type=checkbox checked name=", n, " value=\"", v, "\">"],
-   
-      link_to_window(n,i) then (Printable_tree)
-        ["<a href=\"javascript:void window.open('",n,"','default','resizable,scrollbars');\">",
-            format(c_ticket,s_ticket,i),"</a>"],
-   
-      link_to_window(n,wn,i) then (Printable_tree)
-        ["<a href=\"javascript:void window.open('",n,"','",wn,"','resizable,scrollbars');\">",
-             format(c_ticket,s_ticket,i),"</a>"],
-   
-      link_to_window_with_ticket(n,args,wn,i,w,h) then (Printable_tree)
-        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
-          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-          "&target=",wn,
-          if args="" then "" else "&",
-           args,"','",
-            wn,"','width=",w,",height=",h,"');\">",
-            format(c_ticket,s_ticket,i),"</a>"],
-
-      link_to_window_with_ticket_and_scroll(n,args,wn,i,w,h) then (Printable_tree)
-        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
-          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-          "&target=",wn,
-          if args="" then "" else "&",
-           args,"','",
-            wn,"','width=",w,",height=",h,", resizable,scrollbars');\">",
-            format(c_ticket,s_ticket,i),"</a>"],
-   
-      link_to_window_with_ticket_and_scroll(n,lab,args,wn,i,w,h) then (Printable_tree)
-        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
-          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
-          "&target=",wn,
-          if args="" then "" else "&",
-           args,"&#",lab, "','",
-            wn,"','width=",w,",height=",h,", resizable,scrollbars');\">",
-            format(c_ticket,s_ticket,i),"</a>"],
-   
-      link_to_frame(n,fn,i) then ["<a href=\"",n,
-           (if member('?',n) then "&" else "?"),
-           (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
-           (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),     
-           "\" target=\"",fn,"\">",
-           format(c_ticket,s_ticket,i),"</a>"]
-
-   }. 
-
-
-   
-define Printable_tree
-  add_tickets
-    (
-      String c_ticket, 
-      String s_ticket,
-      String url
-    ) =
-  if member('?',url)
-  then [url , "&c_ticket=", c_ticket, "&s_ticket=", s_ticket ]
-  else [url , "?c_ticket=", c_ticket, "&s_ticket=", s_ticket ]. 
-   
-define Printable_tree
-  add_tickets
-    (
-      String c_ticket, 
-      String s_ticket,
-      Printable_tree url
-    ) =
-  if member('?',url)
-  then [url , "&c_ticket=", c_ticket, "&s_ticket=", s_ticket ]
-  else [url , "?c_ticket=", c_ticket, "&s_ticket=", s_ticket ]. 
-   
-   
-define Printable_tree   
-  format
-    (
-      List(VFrame) frames,
-      String c_ticket, 
-      String s_ticket
-    ) =
-  if frames is 
-    {
-      [ ] then [ ], 
-      [h . t] then 
-        if h is frame(height,url,name) then 
-          [
-            "<frame src=\"",add_tickets(c_ticket,s_ticket,url), "\" name=\"",name,"\" frameborder=no>"
-          . format(t,c_ticket,s_ticket)]
-    }.
-
-   
-define String 
-  frame_size
-    (
-      Int32 s
-    ) =
-  if s =< 0 then "*" else integer_to_string(s). 
-   
-define String
-  frame_stack_rows
-    (
-      List(VFrame) frames
-    ) =
-  if frames is 
-    {
-      [ ] then "", 
-      [h . t] then if h is frame (height,url,name) then 
-        frame_size(height)+
-          if t is 
-            {
-              [ ] then "", 
-              [_ . _] then ","
-            }+frame_stack_rows(t)
-    }.
-   
-
-   
-   'crlf' is defined in 'basis.anubis'. 
-   
-   
-   
-define Printable_tree
-  standard_headers 
-    (
-      Int32 size
-    ) =
-  [
-    "HTTP/1.0 200 OK" + crlf +
-    "Server: Anubis" + crlf +
-    "Content-Type: text/html" + crlf +
-    "Content-Length: "+integer_to_string(size)+crlf+
-    crlf
-  ].
-   
- define Printable_tree
-  download_headers
-    =
-  [
-    "HTTP/1.0 200 OK" + crlf +
-    "Content-Type: application/octet-stream" + crlf +
-    crlf
-  ].
-   
-define Printable_tree
-  apache_headers
-    = 
-  [
-    "Content-type: text/html" + crlf + 
-    crlf
-  ]. 
-   
-   
-define String
-  empty_javascript_source
-    =
-  "javascript:'<html><head></head><body></body></html>';".
-   
-public type HeaderSort:
-  empty,
-  anubis, 
-  apache. 
-
-   
-define Printable_tree
-  format_keywords
-    (
-      List(String) l
-    ) =
-  if l is 
-    {
-      [ ] then [ ], 
-      [h . t] then if t is [ ]
-        then [h]
-        else [h , ", " . format_keywords(t)]
-    }. 
-   
-define Printable_tree
-  format
-    (
-      WebMeta m
-    ) =
-  if m is 
-    {
-      keywords(l)        then ["<meta name=\"keywords\" content=\"",format_keywords(l),"\">"],
-      refresh(url,delay) then ["<meta http-equiv=\"Refresh\" content=\"",delay,"; URL=",url,"\">"], 
-      meta(n,c)          then ["<meta name=\"",n,"\" content=\"",c,"\">"], 
-      http_equiv(n,c)    then ["<meta http-equiv=\"",n,"\" content=\"",c,"\">"]
-    }.
-   
-define Printable_tree
-  format
-    (
-      List(WebMeta) metas
-    ) =
-  if metas is 
-    {
-      [ ] then [ ],
-      [h . t] then [format(h) . format(t)]
-    }. 
-   
-   
-   
-   
-   
-   
-public define Printable_tree
-  format
-    (
-      HeaderSort hs, 
-      String c_ticket, 
-      String s_ticket, 
-      Web_page p
-    ) =
-  if p is 
-   {
-  web_page(title,metas,head_scripts,body) then
-    with body =
-       [
-        "<html>",
-        "<head>",
-        "<title>", title, "</title>",
-        format(metas), 
-        head_scripts, 
-        "</head>",
-        "<body ",
-        if body is body(options,item) then 
-          with b_options = format(prepare(options)),
-           [b_options, " onLoad='body_onloads();", 
-                       if *images_to_load is [] then "" else " preload_images();",
-                       "'>", 
-            load_image_script(*images_to_load), 
-            reverse(*scripts),
-            "<script>",
-            "  function body_onloads() {",
-                 format(*body_onloads),
-            "}</script>",
-            format(c_ticket,s_ticket,item)
-           ],
-        "</body>",
-        "</html>"
-       ],
-      [
-        if hs is 
-           {
-              empty then [ ], 
-              anubis then standard_headers(length(body)), 
-              apache then apache_headers
-           } 
-        . body
-      ],
-  standard_frameset(title,metas,height,width,main) then
-    with body =
-      [
-        "<html>",
-        "<head>",
-        "<title>", title, "</title>",
-        format(metas), 
-        "</head>",
-        "<frameset frameborder=no border=0 framespacing=0",
-        "    marginwidth=0 marginheight=0 cols=\"",width,",*\" rows=\"*\">",
-        "    <frame src=\"",empty_javascript_source,"\" name=\"left\" frameborder=no",
-        "        marginwidth=0 marginheight=0 scrolling=no>",
-        "  <frameset frameborder=no border=0 framespacing=0 rows=\"",height,",*\" cols=\"*\">",
-        "    <frame src=\"",empty_javascript_source,"\" name=\"top\"",
-                " marginwidth=0 marginheight=0 frameborder=no scrolling=no>",
-        "    <frame src =\"", add_tickets(c_ticket,s_ticket,main), 
-              "\" name=\"main\" marginwidth=0 marginheight=0 frameborder=no>",
-        "  </frameset>",
-        "</frameset>",
-        "</html>"
-      ],
-      [
-        if hs is 
-           {
-              empty then [ ], 
-              anubis then standard_headers(length(body)), 
-              apache then apache_headers
-           }
-        . body
-      ]
-    }.
-
-   
-public define Bool
-  print
-    (
-      String c_ticket, 
-      String s_ticket, 
-      Web_page p
-    ) =
-  print(format(anubis,c_ticket,s_ticket,p)).    
-   
-public define Bool
-  print_with_headers
-    (
-      HeaderSort hs,
-      String c_ticket, 
-      String s_ticket, 
-      Web_page p
-    ) =
-  print(format(hs,c_ticket,s_ticket,p)).    
-   
-public define Bool
-  print
-    (
-      Web_page p
-    ) =
-  print(format(anubis,"","",p)). 
-   
-   
-      
-   
-public define Bool
-  print_with_headers
-    (
-      HeaderSort hs, 
-      Web_page p
-    ) =
-  print(format(hs,"","",p)).
-   
-
-public define Cell
-  h_spacer
-    (
-      Int32 n
-    ) =
-  cell([absolute_width(n)],text("&nbsp;")). 
-   
-public define Cell
-  v_spacer
-    (
-      Int32 n
-    ) =
-   cell([absolute_height(n)],text("&nbsp;")).
-   
-public define Cell
-  empty = cell([],text("&nbsp;")). 
-   
-
-   
-   *** Below is a simple gadget for counting visitors. It increments a counter (in a file)
-   at each call.  The  argument is the name of the file (relative  to the directory of the
-   server), and the file is created automatically. It returns the number of the visitor.
-
-public define Int32
-  get_visitor_number
-    ( 
-      String counter_file_name,
-    ) =
-    protect
-    if (RetrieveResult(Int32))retrieve(counter_file_name) is
-      {
-        cannot_find_file  then 
-          //
-          // It's time to create the file. 
-          //
-          if save((Int32)1,counter_file_name) is 
-            {
-              cannot_open_file then 0, 
-              write_error      then 0, 
-              ok               then 1
-            },
-        read_error    then 0, 
-        type_error    then 0, 
-        ok(n)         then 
-          //
-          // Increment the counter
-          //
-          if save(n+1,counter_file_name) is 
-            {
-              cannot_open_file then n, 
-              write_error      then n, 
-              ok               then n+1 
-            }
-      }. 
-   
-   
-   
-   
+
+ *Project*                            The Anubis Project
+ *Title*                         Producing HTML/Javascript code. 
+
+ *Copyright*                    Copyright (c) Alain Prouté 2001. 
+ 
+read tools/basis.anubis
+
+
+
+
+   *** Managing Web Arguments.
+
+   When a client submits a form, he  sends informations to the server. This information is
+   transformed by the server into a list of data of type 'Web_arg'. This is the reason why
+   a 'web page' operation always has a unique argument of type 'List(Web_arg)'.
+
+   The type 'Web_arg' is defined in 'web/common.anubis' as follows:
+     
+         public type Web_arg:
+           web_arg(String name, 
+                   String value),
+           upload (String name, 
+                   String value, 
+                   String temp_file_path). 
+
+read web/CXM_common.anubis   
+   
+   In other words, a  'web argument' is just a pair made of the  name of the argument, and
+   the value of  the argument, and both are character strings.  'upload' will be explained
+   later.
+
+
+   The next variable is a multipurpose counter (used to generate unique names). 
+   
+variable Int32 web_count = 0.
+
+define Int32
+  new_web_count 
+    =
+  web_count <- *web_count+1; 
+  *web_count. 
+   
+
+   Names for Web colors.
+   
+public type Web_color_name:
+  aliceblue,
+  antiquewhite1,
+  antiquewhite2,
+  antiquewhite3,
+  antiquewhite4,
+  aquamarine1,
+  aquamarine2,
+  aquamarine3,
+  aquamarine4,
+  azure1,
+  azure2,
+  azure3,
+  azure4,
+  yellow. 
+
+
+  and so on ...  (see below why I did not do more).
+
+
+
+   Web colors.
+   
+public type Web_color:
+  rgb(Int32,Int32,Int32),    /* give the color by its components */ 
+  _(Web_color_name).         /* or by its name */ 
+
+
+   
+   
+   The following produces '<meta>' tags, which are put in the head of the document. 
+   
+public type WebMeta:
+  keywords(List(String)), 
+  refresh(String url, Int32 delay),                // in seconds
+  meta(String name, String content),
+  http_equiv(String name, String content). 
+   
+   
+   
+   
+   
+                *******************************************************
+                *                      Web items                      *
+                *   (the many kinds of things one may put in a page)  *
+                *******************************************************
+
+   
+public type Web_item:
+  [ ],           /* empty (invisible) item */
+  ... this is a cross recursive type. 
+
+
+   
+  
+   Options for web page body.
+   
+public type LayerDisposition:
+  horizontal, 
+  vertical.
+   
+public type FollowPathCommand:    // this type is used by the Web_body_option 'follow_path'. 
+  pos(Int32 x,                    // x coordinate of position
+      Int32 y,                    // y coordinate of position
+      Int32 image_number,         // the image to display at that position
+      Int32 delay).               // wait that milliseconds before leaving this position
+      
+public type Web_body_option:
+  background_color(Web_color),               /* color for the background */
+   //
+   // 'psychedelic_background' produces a background color which is continuously changing.
+   // 'average' is the average luminosity of the color. 'amplitude' is the maximal variation 
+   // the luminosity around the average. 'delay' is the number of milliseconds between two
+   // color changes. For example, you may try 'psychedelic_background(200,50,1000)', which
+   // produces a background whose color changes very slowly (this is not tiring) among rather
+   // light pastel colors. 
+   //
+  psychedelic_background(Int32 average,      /* average light (0 to 255) */
+                         Int32 amplitude,    /* amplitude of variation of light */
+                         Int32 delay),       /* in milliseconds */
+  background_image(String file_name),        /* name of image file for the background */
+   //
+   // 'scrolling_layer' produces a layer above the page which is scrolling continuously either
+   // vertically or horizontally. The 'content' is indefinitly repeated. 
+   //
+  scrolling_layer(LayerDisposition,       
+                  Int32 steps,               /* number of pixels of each move */ 
+                  Int32 margin,              /* measured from left or top in pixels */ 
+                  Int32 delay,               /* milliseconds for one move */
+                  Web_item content,          /* content of layer (will be repeated) */ 
+                  Int32 period),             /* number of pixels between two instances of 'content' */ 
+   //
+   // 'bounce' shows its content above the page and let it move and bounce on the edges of a rectangle.
+   // The rectangle is determined by the last 4 arguments. 
+   //
+  bounce(Web_item content,
+         Int32 left,
+         Int32 right,
+         Int32 top,
+         Int32 bottom),
+   //
+   // put something over the page in any position you want:
+   //
+  over(Web_item content, 
+       Int32 left,
+       Int32 top), 
+   //
+   // follow_path: let a changing image follow a path on the screen. This gadget shows
+   //   an image following a polygonal path on the screen. The image may change at regular
+   //   intervals, thus providing extra animation. The images are displayed in the order
+   //   they are given in the first argument. When the last image has been displayed, the
+   //   first image is displayed again, and so on. The path is a sequence of absolute positions
+   //   on screen (actually in the browser's window or frame), which is followed in the 
+   //   order given in the 'path' argument. If 'loop' is true, the path is followed again and again. 
+   //   Otherwise, it is followed only once. If you want to make a closed loop, the last
+   //   position must be the same as the first one. 'steps' is the number of pixels of distance
+   //   between two successive positions of the image, and 'delay' the number of milliseconds
+   //   between two successive positions. 'change_every' is the number of steps (a 'step' is
+   //   passing from one position to the next one) after which the displayed image is replaced
+   //   by the next image. 
+   //
+   //   Each position 'pos(x,y,i,d)' has 4 parameters. 'x' and 'y' are the coordinates of the
+   //   position in the browser's window or frame. 'i' is the number of the image to display
+   //   at this position (i.e. the rank of the image in the list 'filename'. The first one has
+   //   rank 0). 'd' is the delay in milliseconds to wait before leaving that position. 
+   //
+  follow_path(List(String) filenames,     /* the changing images which follows the path */ 
+              Int32 change_every,         /* number of steps betwen two changes */ 
+              List(FollowPathCommand) path,       /* the polygonal path and commands */ 
+              Bool loop,                  /* if true do it repeatedly, otherwise only once */ 
+              Int32 steps,                /* approximative distance (in pixels) between two 
+                                               successive positions */ 
+              Int32 delay),               /* milliseconds between two successive positions */ 
+   
+  load_image(String name),                /* load an image (for next page), which is not displayed */ 
+  left_margin(Int32),                     /* left margin for document */ 
+  top_margin(Int32),                      /* top margin for document */ 
+  margin_width(Int32), 
+  margin_height(Int32), 
+  reload_frame(String name,       /* name of target frame */
+               String url),       /* url to load in this frame */ 
+  onload(String function_name).    /* nom de la fonction javascript (sans les '()') */
+
+public type BodyOnload:
+  reload_frame(String name, String url). 
+   
+variable List(BodyOnload) body_onloads = [ ]. 
+
+define One
+  add_body_onload
+    (
+      BodyOnload item
+    ) =
+  body_onloads <- [item . *body_onloads]. 
+   
+define Printable_tree
+  format
+    (
+      BodyOnload item
+    ) =
+  if item is 
+    {
+      reload_frame(name,url) then (Printable_tree)
+        [ " window.open('",url,"','",name,"');" ]
+    }.
+   
+define Printable_tree
+  format
+    (
+      List(BodyOnload) l
+    ) =
+  if l is 
+    {
+      [ ] then (Printable_tree)[ ], 
+      [h . t] then (Printable_tree)
+        [format(h) . format(t)]
+    }.
+   
+
+---- Body of a web page. --------------------------------------------
+public type Page_body:  
+  body(List(Web_body_option),   /* list of body options */
+       Web_item content).       /* the content of the page */ 
+
+
+public type VFrame:
+ frame(Int32 height, 
+       Printable_tree url,
+       String name). 
+   
+---- Web pages. -----------------------------------------------------
+public type Web_page: 
+  web_page(String title,             /* title appearing on top of browser */
+           List(WebMeta) meta_tags,
+           Printable_tree  head_scripts, /* scripts à placer dans la balise head */
+           Page_body body),          /* body of page */ 
+  standard_frameset(String title,
+                    List(WebMeta) meta_tags, 
+                    Int32 height,             /* height of 'top menu' (pixels) */ 
+                    Int32 width,              /* width of 'left menu' (pixels) */ 
+                    Printable_tree main).     /* url for main */ 
+
+   +---------+--------------------------+
+   |         |                ^         |
+   |<-width->|      top     height      |
+   |         |                v         |
+   | left    +--------------------------+
+   |         |                          |
+   |         |     main                 |
+   |         |                          |
+   |         |                          |
+   |         |                          |
+   +---------+--------------------------+
+   
+   Note: top and left frames must be loaded through the Web_body_option 'reload_frame'. 
+   
+
+public define Web_page
+  web_page
+    (
+      String title, 
+      Page_body body
+    ) =
+  web_page(title,[],[], body). 
+
+public define Web_page
+ web_page
+   (
+    String          title,
+    List(WebMeta)   meta_tags,
+    Page_body       body
+   ) =
+
+ web_page(title, meta_tags, [], body).
+
+ public define Web_page
+web_page
+  (
+   String         title,
+   Printable_tree head_scripts,
+   Page_body      body
+  ) =
+
+  web_page(title, [], head_scripts, body).
+
+public define Web_page
+standard_frameset
+    (
+      String title,
+      Int32 height, 
+      Int32 width,  
+      Printable_tree main
+    ) =
+
+ standard_frameset(title, [], height, width, main).
+   
+   
+variable Printable_tree scripts = []. 
+   
+define One
+  add_script
+    (
+      Printable_tree script
+    ) =
+  scripts <- [*scripts . script]. 
+   
+   
+   
+   ---- Non empty web items. -------------------------------------------
+
+   We have already seen the empty web item. Together with the following one, it enables to
+   make (pseudo-)lists  of web items,  which will be  presented one after the  other (from
+   left to right) in the browser's window.
+
+public type Web_item:
+  [Web_item . Web_item],...
+
+
+   A web item may be a simple string or a simple integer:
+
+public type Web_item:
+  text(String),          
+  text_pt(Printable_tree), 
+  text_nowrap(String),          
+  text_nowrap_pt(Printable_tree), 
+  par(String),
+  preformated_text(String text), 
+  integer(Int32),
+  float(Float,Int32),...
+
+
+   You may want to center a web item in a page. Just enclose it into
+   'center(...)': 
+
+public type Web_item:
+  center(Web_item),...
+
+
+   You may want to write characters of a given item with a big font:
+
+public type Web_item:
+  bigger(Int32,Web_item), 
+  smaller(Int32,Web_item), 
+  bold(Web_item),
+  italic(Web_item), 
+  big(Web_item),
+  very_big(Web_item),...
+
+   
+   Most of the previous are subsumed by 'style':
+   
+public type WebStyle:
+  background_image(String file_name),
+  background_color(Web_color color), 
+  background_transparent, 
+  background_repeat_horizontal,    // repeat the background image only horizontally
+  background_repeat_vertical,
+  background_no_repeat, 
+  color(Web_color color), 
+  float_to_left,      // the web item will float to the left and text will wrap around 
+  float_to_right,
+  font_family(String font_name),   // "verdana" "helvetica" "times" etc...
+  font_size(Int32 size), 
+  italic,
+  oblique,
+  small_capitals, 
+  bold, 
+  bolder,
+  lighter,
+  line_height(Int32 height),
+  text_center,
+  text_left,
+  text_right,
+  text_justify,
+  text_underline,
+  text_blink,
+  text_line_through,
+  width(Int32 n).
+   
+  
+   
+public type Web_item:
+  style(List(WebStyle) styles, Web_item content),...
+   
+   
+public type Web_item:
+  spacer(Int32 width, Int32 height), 
+  image(String file_name),              /* image */ 
+  image_d(String file_name, String description), 
+  image_pt(Printable_tree file_name),
+  on_image(String file_name, Web_item content),
+  turning_images(NonEmptyList(String) filenames, Int32 millisecs),...
+   
+   
+   
+   A 'rollover' has  the same role as a submit  button or link, but it  is prettier. It is
+   made of two images.  The first one  'image_on' determines the aspect of the button when
+   the mouse  cursor is on  it.  The  other one 'image_off'  determines the aspect  of the
+   button when  the mouse cursor is  anywhere else. The two  images should be  of the same
+   size, otherwise bad  effects may occur. The last operand 'description'  is a small text
+   which describes the role of the button. It appears in a bubble in the browser's window.
+   
+public type Web_item:   
+  rollover(List(String) preload_images,   // images to preload before the rollover is effective
+           String url,                    // URL with possible web arguments
+           String target, 
+           String image_on,               // file name of 'highlighted' image 
+           String image_off,              // file name of 'non highlighted' image
+           String description),           // short behavior description
+  rollover(List(String) preload_images, 
+           String url,    
+           String target,        
+           String image_on,         
+           String image_off,        
+           Int32 width, 
+           Int32 height, 
+           String description), ... 
+   
+
+   Mouse  sensitive images  are images  with predefined  zones which  are  clickable. When
+   clicking in a  zone, the specified corresponding  URL is loaded by the  browser. If two
+   zones overlap, the first one (in the order they are defined) is selected.
+   
+   Zones  are of  3  sorts: rectangles,  circles  and polygons.   Point's coordinates  are
+   specified as  pairs of  integers (of anonymous  agglomeration type  (Int32,Int32)). The
+   first coordinate counts pixels from the left of the image. The second coordinate counts
+   pixels from  the top of the  image.  With polygons,  you can construct zones  which are
+   almost as complicated as you want. You  may also construct a zone as the overlapping of
+   several zones with the same URL.
+   
+public type Mouse_Sensitive_Zone:
+  rectangle  
+    (   
+      (Int32,Int32) left_top, 
+      (Int32,Int32) right_bottom,
+      String url
+    ),
+  circle     
+    (   
+      (Int32,Int32) center,
+      Int32 radius,
+      String url
+    ),
+  polygon
+    (   
+      List((Int32,Int32)) vertices,
+      String url
+    ). 
+   
+public type Web_item:
+  mouse_sensitive_image(String image_file_name,       // the image itself
+                        List(Mouse_Sensitive_Zone) zones),...
+
+
+   In project: mouse  sensitive images, whose zones behave like  submission buttons (to be
+   used within a form).
+   
+   
+public type Web_item:
+  background_sound(String sound_file_name, 
+                   Bool loop),...
+   
+   
+
+                        *************************
+                        *         FORMS         *
+                        *************************
+
+
+   Use 'forms' in  order to get informations back from the  client. The constructor 'form'
+   take 2 arguments:
+
+    - the name of the form, which must be the name of an Anubis web
+      page. Indeed, when the user will submit the form, this page will
+      be sent to him. 
+    - the content of the form, which may be any web item, but which
+      normally (amongh other things) contains input fields and a
+      submit button.  
+
+public type Web_item:
+  form(Printable_tree  name,
+       Web_item  content),
+  form_target(Printable_tree name,
+       Web_item content,
+       String target),
+  form(Printable_tree  name, 
+       String label_name,
+       Web_item  content),
+  form_name(String          form_name,  // option name de form
+            Web_item  content),...
+
+ public define Web_item
+form
+ (
+  Printable_tree  name,
+  Web_item        content
+ ) =
+
+ form("", name, content).
+
+   Within a form, you may put 'text input fields', that the client may
+   edit. The constructor 'text_input' has the following arguments: 
+
+    - name of input field. This will be the name of the correponding
+      web argument in the Anubis web page referred to by the form. 
+    - size of field (as it appears on client screen), 
+    - initial value of field (the text that appears in the field, when
+      the client downloads the page). 
+
+
+ public type Text_Input_Option
+
+public type Web_item:
+  text_input(String name,           /* text field to be documented by user */
+             Int32 size,
+             String initial_value),...
+
+ public define Web_item
+ text_input
+  (
+   String   name,
+   Int32    size,
+   String   initial_value
+  ) =
+
+
+ text_input( (List(Text_Input_Option)) [], name, size, initial_value).
+
+
+public type Web_item:
+  password_input(String name,
+                 Int32 size),
+  text_area(String name,
+            Int32 columns, 
+            Int32 rows,
+            String initial_text), 
+  upload(String name, Int32 size),...
+
+
+
+
+public type Web_item:
+  submit(String button_text),        /* submit button with text on it */
+  submit_pt(Printable_tree button_text),
+  submit(String name, String text),
+  submit_close(String name, String text), 
+  submit_pt2(String name, Printable_tree text),
+  image_submit(String name, String image_file_name),
+  image_submit(String name, String value, String image_file, Web_item content),
+  hl_image_submit(String action_name, 
+                  String value, 
+                  String image_name, 
+                  String image_file, 
+                  String hl_image_file), 
+  text_submit(String name, String value, String text),
+  web_submit(String web_args, Web_item content),
+  button(String name, String text, String on_click_fonction, Int32 width, Int32 height),...
+
+
+public type Web_item:                         /* mark the form with an information */ 
+  mark(String name, String value),
+  mark_pt(String name, Printable_tree value),...
+
+public type Web_item:
+  close_button,                               /* button that closes the window */ 
+  close_button(String image_file_name), ...
+   
+   
+   
+                      *********************************
+                      *            LABELS             *
+                      *********************************
+   
+   
+   A 'label'  is just  a name  that you may  give to  a position in  a document.   Use the
+   following invisible  Web_item 'label' to this end.   Now, you can also  create links in
+   the same document,  which, when clicked by  the user, scroll the document,  so that the
+   position  whose name is  the given  label is  shown just  at the  top of  the browser's
+   window.
+   
+public type Web_item:
+  label(String label_name),       /* give a name to a position in the page */ 
+  go_to_label(String label_name,  /* a link for jumping to a label */ 
+              Web_item content),...
+
+
+
+                     ********************************
+                     *           TABLES             *
+                     ********************************
+
+
+   A web item may be a table. A table is produced by the constructor
+   'table' from the type 'Web_item'. This constructor takes 2
+   arguments: 
+
+    - a list of 'table options', 
+    - a list of 'table rows'. 
+
+   Of course, you use as many options as you want, including
+   none (if you do not want any option, put the empty list '[ ]' as
+   this argument). Some options have precedence over others. For example
+   a background image will hide the background color. 
+
+   Table options are defined below:
+
+public type Table_option:
+
+      /* use a color as a background for the table, if you want it to
+      be different from the background of the page */ 
+   background_color(Web_color),   
+
+      /* or use an image as the background of the table */
+   background_image(String file_name),
+
+      /* draw a border line around the table (and around each cell in
+      the table). You may also specify a geometry (in pixels) for the
+      border. This makes the 'in relief' part of the border appear
+      more or less wide. You may also specify a color for the border. */
+   border,
+   nude,           /* equivalent to 'border(0,0,0)' (below) */ 
+   border(Int32,   /* width of exterior (pixels) */ 
+          Int32,   /* width of top */
+          Int32),  /* width of interior */
+   border_color(Web_color),
+   absolute_width(Int32). 
+
+
+
+   A 'table row' is made of a list of 'row options', and a list of
+   'cells'. A 'cell' itself has a list of 'cell options', and a web item,
+   which is its content. We begin by the description of options. 
+
+
+public type Row_option:
+     /* following concerns the horizontal positions of items within the
+     cells of the row */
+   left,
+   h_center,
+   right, 
+     /* the following concerns the vertical positions of items, within
+     the cells of the row */
+   top,
+   v_center,
+   bottom,
+   absolute_height(Int32), 
+   base_line,
+     /* set the background color of all cells in the row */ 
+   background_color(Web_color).
+
+
+
+public type Cell_option:
+     /* all row options are available for individual cells, and apply
+     here only to one cell. */ 
+   left,   
+   h_center,
+   right, 
+   top,
+   v_center,
+   bottom,
+   base_line,
+   background_color(Web_color),  
+     /* you can set the width of the cell either absolutely (in pixels)
+     or as a percentage of the width of the table. */ 
+   background_image(String file_name),
+   absolute_width(Int32),
+   relative_width(Int32),
+   absolute_height(Int32),
+   relative_height(Int32),
+     /* a cell may span over several columns or rows in the table */
+   columns(Int32),
+   rows(Int32),
+   nowrap.
+
+
+public type Cell:
+   cell(List(Cell_option),
+        Web_item). 
+
+public type Table_row:
+   row(List(Row_option),
+       List(Cell)). 
+   
+public define Table_row row(Web_item i)     = row([],[cell([],i)]). 
+public define Table_row row(Cell c)         = row([],[c]). 
+public define Table_row row(List(Cell) l)   = row([],l). 
+   
+
+public type Web_item:
+  table(List(Table_option),
+        List(Table_row)),...
+
+public type Web_item: 
+  list(List(Web_item)),...
+
+public type Web_item:
+  link(String name, Web_item),
+  link(String name, String target, Web_item),...
+
+public type Web_item:
+  link_for_download(String filename, Web_item),...    // the filename is relative to the public directory
+   
+public type Web_item:
+  mail_to(String addr, Web_item),...
+
+
+public type Web_item:
+  select(String name, 
+         Int32 size, 
+         List(String) choices),
+  select(String name,
+         Int32 size,
+         List(String) choices,
+         String selected),
+  immediate_select(String name,         // selection will immediately submit the form 
+                   Int32 size,
+                   List(String) choices),...
+
+
+public type Web_item:
+  radio_button           (Printable_tree name, String value),
+  checked_radio_button   (Printable_tree name, String value),
+  check_box              (Printable_tree name, String value),
+  checked_box            (Printable_tree name, String value),...
+
+
+public type Web_item:
+  link_to_window(Printable_tree name, Web_item),
+  link_to_window(Printable_tree name, String window_name, Web_item),
+  link_to_window_with_ticket(String name, 
+                             String web_args, 
+                             String window_name, 
+                             Web_item content,
+                             Int32 width, 
+                             Int32 height), 
+  link_to_window_with_ticket_and_scroll
+                            (String name, 
+                             String web_args, 
+                             String window_name, 
+                             Web_item content,
+                             Int32 width, 
+                             Int32 height), 
+  link_to_window_with_ticket_and_scroll
+                            (String name, 
+                             String label_name, 
+                             String web_args, 
+                             String window_name,
+                             Web_item content,
+                             Int32 width, 
+                             Int32 height), 
+  link_to_frame (Printable_tree name, String frame_name, Web_item). 
+  
+
+
+---- Formating operations (Anubis --> HTML/Javascript) --------------------------- 
+
+   Stupid operation formating a web color name. 
+
+public define String 
+  format
+    (
+      Web_color_name n
+    ) =
+ if n is
+  {
+    aliceblue        then   "aliceblue",
+    antiquewhite1    then   "antiquewhite1",
+    antiquewhite2    then   "antiquewhite2",
+    antiquewhite3    then   "antiquewhite3",
+    antiquewhite4    then   "antiquewhite4",
+    aquamarine1      then   "aquamarine1",
+    aquamarine2      then   "aquamarine2",
+    aquamarine3      then   "aquamarine3",
+    aquamarine4      then   "aquamarine4",
+    azure1           then   "azure1",
+    azure2           then   "azure2",
+    azure3           then   "azure3",
+    azure4           then   "azure4",
+    yellow           then   "yellow",
+  }. 
+
+   Anubis really needs some system of 'macros' to avoid this...
+
+
+   Formating a web color. 
+   
+public define String
+  format
+    (
+      Web_color wc
+    ) =
+  if wc is
+    {
+      rgb(r,g,b) then "\"#" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "\"",          
+      _(c) then format(c) 
+    }. 
+
+public define String
+  format_without_quotes
+    (
+      Web_color wc
+    ) =
+  if wc is
+    {
+      rgb(r,g,b) then "#" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "",          
+      _(c) then format(c) 
+    }. 
+
+define Printable_tree
+  format
+    (
+      Web_color c
+    ) = [(String)format(c)]. 
+
+public define String
+  format_without_sharp
+    (
+      Web_color wc
+    ) =
+  if wc is
+    {
+      rgb(r,g,b) then "" + hexadecimal(r,2) + hexadecimal(g,2) + hexadecimal(b,2) + "",          
+      _(c) then format(c) 
+    }. 
+
+define Printable_tree
+  format_without_sharp
+    (
+      Web_color c
+    ) = [(String)format_without_sharp(c)]. 
+
+
+   
+define Printable_tree
+  psychedelic_bg
+    (
+      Int32 average,
+      Int32 amplitude,
+      Int32 delay
+    ) =
+  with ampl = if amplitude >= 120 then 120 else 
+              if amplitude =< 1 then 1 else amplitude, 
+  with aver = if average+ampl >= 254 then 254-ampl 
+              else if average-ampl =< 1 then 1+ampl else average,
+  [ "<script>",
+    " var psy_t = 0;",
+    " function do_psy_bg() { psy_t += 0.05;",
+    "   document.bgColor = '#' + ",
+    "  (Math.round(",aver,"+",ampl,"*Math.cos(psy_t))).toString(16) + ",
+    "  (Math.round(",aver,"+",ampl,"*Math.sin(psy_t))).toString(16) + ",
+    "  (Math.round(",aver,"-",ampl,"*Math.cos(2*psy_t))).toString(16); ",
+    " setTimeout(\"do_psy_bg()\",",delay,"); }",
+    " setTimeout(\"do_psy_bg()\",1000);", 
+    "</script>"].
+
+   
+define List(Web_body_option)
+  replace_background_init
+    (
+      List(Web_body_option) l,
+      Int32 average,
+      Int32 amplitude,
+      Int32 delay
+    ) = 
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        if h is background_color(_) 
+        then [background_color(rgb(average+amplitude,
+                                   average,
+                                   average-amplitude)) 
+              . replace_background_init(t,average,amplitude,delay)]
+        else [h . replace_background_init(t,average,amplitude,delay)]
+    }.
+   
+define Maybe((Int32,Int32,Int32))   
+  get_psy
+    (
+      List(Web_body_option) l
+    ) = 
+  if l is 
+    {
+      [ ] then failure, 
+      [h . t] then 
+        if h is psychedelic_background(a,f,d) 
+        then success((a,f,d)) 
+        else get_psy(t)
+    }.
+   
+define List(Web_body_option)
+  prepare
+    (
+      List(Web_body_option) l
+    ) =
+  if get_psy(l) is 
+    {
+      failure then l, 
+      success(op) then if op is (a,f,d) then 
+        replace_background_init(l,a,f,d)
+    }.
+   
+   
+public define Printable_tree
+  format
+    (
+      String c_ticket, 
+      String s_ticket,
+      Web_item i
+    ).   
+      
+define Printable_tree
+  move_layer_command
+    (
+      String property,
+      Int32 n,
+      Int32 num,
+      Int32 i,
+      Int32 period
+    ) =
+  if i >= num then [ ] else
+  [" if (document.layers)",
+   " { document.nslay",n,"_",i,".",property,"=layp",n,"+(",((i-1)),"); } ",
+   " else ",
+   " { ielay",n,"_",i,".style.",property,"=layp",n,"+(",(i-1)*period,"); } "
+   . move_layer_command(property,n,num,i+1,period)].
+   
+define Printable_tree
+  format_layers
+    (
+      LayerDisposition disp,
+      Int32 margin,
+      Web_item content,
+      Int32 n, 
+      Int32 num,
+      Int32 i,
+      Int32 period
+    ) =
+  if i >= num then [ ] else
+  ["<layer name=\"nslay",n,"_",i,"\" top=0",
+                           " left=0", ">",
+    "<div id=ielay",n,"_",i," style=\"position:absolute;top:",
+             if disp is vertical then (i-1)*period else margin,
+             "px;left:",
+             if disp is vertical then margin else (i-1)*period,
+             "px\">",
+       format("","",content),
+   "</div></layer>" . format_layers(disp,margin,content,n,num,i+1,period)]. 
+     
+define Printable_tree
+  s_layer
+    (
+      LayerDisposition disp,
+      Int32 steps,
+      Int32 margin,
+      Int32 delay, 
+      Web_item content,
+      Int32 period,
+      Int32 num
+    ) =
+  with n = new_web_count, 
+  [ "<script>",
+    " var layp",n," = 0;", 
+    " function scroll_layer",n,"() {",
+    " layp",n,"+=(",steps,"); if (layp",n," ",if steps > 0 then ">" else "<",
+             "= ",if steps > 0 then period else 0,
+             ")   layp",n," = ",if steps > 0 then 0 else period,";",
+    move_layer_command(if disp is vertical then "top" else "left",n,num,0,period),   
+    " setTimeout(\"scroll_layer",n,"()\",",delay,");",
+    " }",
+    " setTimeout(\"scroll_layer",n,"()\",1000);",
+    "</script>",
+    format_layers(disp,margin,content,n,num,0,period),   
+    ].
+   
+      
+define Printable_tree
+  over
+    (
+      Web_item i,
+      Int32 left, 
+      Int32 top
+    ) =
+  with n = new_web_count, 
+  [ "<layer name=\"nslay",n,"\" top=",top," left=",left,">",
+    " <div id=\"ielay",n,"\" style=\"position:absolute;top=",top,"px;left=",left,"px\">",
+    format("","",i),
+    "</div></layer>"
+    ]. 
+   
+define Printable_tree
+  bnce
+    (
+      Web_item i,
+      Int32 left, 
+      Int32 right,
+      Int32 top,
+      Int32 bottom
+    ) =
+  with n = new_web_count, 
+  [ "<script>",
+    "  var bncx",n," = ",left,"; var bncy",n," = ",top,"; var bncdx",n," = 1; var bncdy",n," = 1;", 
+    " function do_bnc",n,"() {",
+    "   if (bncx",n," >= (",right,") || bncx",n," < ",left,") bncdx",n," = -bncdx",n,";", 
+    "   if (bncy",n," >= (",bottom,") || bncy",n," < ",top,") bncdy",n," = -bncdy",n,";", 
+    "   bncx",n," += bncdx",n,"; bncy",n," += bncdy",n,";", 
+    "   if (document.layers)",
+    "     { document.nslay",n,".left = bncx",n,"; document.nslay",n,".top = bncy",n,"; } else",
+    "     { ielay",n,".style.left = bncx",n,"; ielay",n,".style.top = bncy",n,"; }",
+    " setTimeout(\"do_bnc",n,"()\",40); }", 
+    " setTimeout(\"do_bnc",n,"()\",1000);",
+    "</script>",
+    "<layer name=\"nslay",n,"\" top=",top," left=",left,">",
+    " <div id=\"ielay",n,"\" style=\"position:absolute;top=",top,"px;left=",left,"px\">",
+    format("","",i),
+    "</div></layer>"
+    ]. 
+   
+   
+define Printable_tree
+  folp_switch
+    (
+      Int32 n, 
+      Int32 i, 
+      List(FollowPathCommand) path, 
+      Bool loop,
+      Int32 steps
+    ) =
+  if path is 
+    {
+      [ ] then [ ], 
+      [p0 . t0] then if p0 is pos(x0,y0,i0,d0) then 
+        if t0 is 
+          {
+            [ ] then if loop
+                then ["        default: ",
+          "            folpx",n,"=",x0,"; folpy",n,"=",y0,"; ", 
+          "            folpseg",n,"=0; ",
+          "            folpwait",n,"=",d0,";", 
+          "   if(document.layers)",
+          "        document.nslay",n,".document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
+          "   else document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
+          "            folpstpmax",n," = 0;",
+          "            folpstp",n,"=0;", 
+          "            folpdx",n,"=0; ",
+          "            folpdy",n,"=0; ",                       
+                      "        break;"]
+                else ["        default: folpend",n,"=1; break; "], 
+            [p1 . t1] then if p1 is pos(x1,y1,i1,d1) then
+        [ "          case ",i,": ",
+          "            folpx",n,"=",x0,"; folpy",n,"=",y0,"; ", 
+          "            folpseg",n,"=",i+1,"; ",
+          "            folpwait",n,"=",d0,";", 
+          "   if(document.layers)",
+          "        document.nslay",n,".document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
+          "   else document.folpim",n,".src=folpimages",n,"[",i0,"].src;", 
+          "            folpstpmax",n," = ",
+    "Math.round(Math.sqrt(Math.pow(",x1,"-",x0,",2)+Math.pow(",y1,"-",y0,",2))/",steps,");",
+          "            folpstp",n,"=0;", 
+          "            folpdx",n,"=((",x1,"-",x0,")/folpstpmax",n,"); ",
+          "            folpdy",n,"=((",y1,"-",y0,")/folpstpmax",n,"); ", 
+          "            break; " 
+        . folp_switch(n,i+1,t0,loop,steps) ]
+    }}. 
+      
+define Printable_tree
+  set_folpimages
+    (
+      Int32 n, 
+      List(String) filenames,
+      Int32 i, 
+    ) = 
+  if filenames is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        [ " folpimages",n,"[",i,"].src=\"",h,"\";" 
+        . set_folpimages(n,t,i+1)]
+    }. 
+   
+define Printable_tree
+  follow_path
+    (
+      List(String) filenames, 
+      Int32 change_every, 
+      List(FollowPathCommand) path, 
+      Bool loop, 
+      Int32 steps,
+      Int32 delay
+    ) =
+  if filenames is 
+    {
+      [ ] then (print("Error in usage of 'follow_path': 'filenames' must be non empty."); []), 
+      [im1 . other_ims] then 
+  if steps < 1 then (print("Error in usage of 'follow_path': 'step' must be >= 1."); [ ]) else
+  if path is 
+    {
+      [ ] then [ ], 
+      [p0 . t0] then if p0 is pos(x0,y0,i0,d0) then 
+        if t0 is 
+          { 
+            [ ] then 
+              (print("Error in usage of 'follow_path': 'path' must have at least 2 positions."); []),
+            [p1 . t1] then if p1 is pos(x1,y1,i1,d1) then  
+        with n = new_web_count, 
+       [ 
+         "<layer name=\"nslay",n,"\" top=",y0," left=",x0,">",
+         "<div id=\"ielay",n,"\" style=\"position:absolute;top=",y0,"px;left=",x0,"px\">",
+         "<img src=\"",im1,"\" name=\"folpim",n,"\" border=0>",
+         "</div></layer>",
+         "<script>",
+         "  var folpimages",n,"=new Array(",length(filenames),");", 
+         "  var folpcurim",n,"=0;", 
+         "  var folpx",n," = ",x0,";", 
+         "  var folpy",n," = ",y0,";", 
+         "  var folpseg",n," = 1;", 
+         "  var folpstpmax",n," = ",
+   "Math.round(Math.sqrt(Math.pow(",x1,"-",x0,",2)+Math.pow(",y1,"-",y0,",2))/",steps,");", 
+         "  var folpdx",n,"=((",x1,"-",x0,")/folpstpmax",n,"); ",
+         "  var folpdy",n,"=((",y1,"-",y0,")/folpstpmax",n,"); ", 
+         "  var folpstp",n," = 0;", 
+         "  var folpchgcnt",n," = 0;", 
+         "  var folpwait",n,"=",d0,";",
+         "  var folpend",n,"=0;", 
+         "  for(var i = 0; i<",length(filenames),"; i++) {",
+         "    folpimages",n,"[i]=new Image(); }", 
+         set_folpimages(n,filenames,0), 
+         "  function dofolp",n,"() {", 
+         "    if (folpstp",n," >= folpstpmax",n,")",
+         "      { switch(folpseg",n,") {",
+         folp_switch(n,0,path,loop,steps),
+         "      }} else { folpstp",n,"++; folpx",n," += folpdx",n,"; folpy",n," += folpdy",n,"; };", 
+         "  if (document.layers)",
+         "  { document.nslay",n,".left=folpx",n,"; document.nslay",n,".top=folpy",n,"; } else",
+         "  { ielay",n,".style.left=folpx",n,"; ielay",n,".style.top=folpy",n,"; };",
+   
+         //--- change image if needed:
+         if change_every = 0 then [ ] else 
+         if length(filenames) =< 1 then [ ] else
+         ["  if (folpchgcnt",n,"==",change_every,") ",
+          "    { ", 
+          "      folpchgcnt",n,"=0;",
+          "      folpcurim",n,"++;", 
+          "      if (folpcurim",n,"==",length(filenames),") folpcurim",n,"=0;", 
+          "  if (document.layers) ",
+          "       document.nslay",n,".document.folpim",n,".src=folpimages",n,"[folpcurim",n,"].src;",
+          "  else document.folpim",n,".src=folpimages",n,"[folpcurim",n,"].src;",
+          "    }",
+          "    else { folpchgcnt",n,"++; };"],
+   
+         "  if (!folpend",n,")",
+         "    if (folpstp",n,") setTimeout(\"dofolp",n,"()\",",delay,"); ",
+         "    else setTimeout(\"dofolp",n,"()\",",delay,"+folpwait",n,"); ",
+         "     }",
+         "  setTimeout(\"dofolp",n,"()\",1000);", 
+         "</script>",
+         ]
+    }}}. 
+
+   
+public type ImageToLoad:
+  simple(String image_name),
+  with_rollover(String image_name,
+                String rollover_name). 
+   
+variable List(ImageToLoad) images_to_load = [].    
+   
+public define Printable_tree
+  format
+    (
+      Web_body_option o
+    ) =
+  if o is
+    {
+      background_color(c)                then [" bgcolor=" , (String)format(c)],
+      psychedelic_background(a,f,d)      then add_script(psychedelic_bg(a,f,d)); [ ], 
+      background_image(n)                then [" background=", n],
+      scrolling_layer(disp,st,m,t,c,p)   then add_script(s_layer(disp,st,m,t,c,p,2000/p)); [ ], 
+      bounce(i,l,r,t,b)                  then add_script(bnce(i,l,r,t,b)); [ ], 
+      over(i,l,t)                        then add_script(over(i,l,t)); [ ],
+      follow_path(li,ns,p,l,s,d)         then add_script(follow_path(li,ns,p,l,s,d)); [ ], 
+      load_image(n)                      then images_to_load <- [simple(n) . *images_to_load]; [ ], 
+      left_margin(n)                     then [" leftmargin=", n],
+      top_margin(n)                      then [" topmargin=", n],
+      margin_width(n)                    then [" marginwidth=", n],
+      margin_height(n)                   then [" marginheight=", n],
+      reload_frame(n,url)                then add_body_onload(reload_frame(n,url)); [ ],
+      onload(n)                          then [" onLoad=\"", n, "()\""] 
+    }.
+
+define Printable_tree
+  preload_list
+    (
+      List(ImageToLoad) images,
+      Int32 n, 
+    ) =
+  if images is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        ["   preloaded_images[",n,"].src = '",image_name(h),"';",
+         if h is 
+           {
+             simple(_) then [],
+             with_rollover(n1,r) then 
+               ["   preloaded_images[",n1,"].onload = 'allow_rollover(\"",r,"\")';"]
+           }
+         . preload_list(t,n-1)]
+    }.
+
+define Printable_tree 
+  load_image_script
+    (
+      List(ImageToLoad) images
+    ) =
+  if images is 
+    {
+      [ ] then [ ], 
+      [_ . _] then 
+        [
+          "<script>",
+          "  var preloaded_images = new Array(",length(images),");", 
+          "  var pi_i = 0;", 
+          "  for(pi_i = 0; pi_i < ",length(images),"; pi_i++) {", 
+          "    preloaded_images[pi_i] = new Image(); }",
+          "  function preload_images() {",
+          preload_list(images,length(images)-1), 
+          "     }</script>"
+        ]
+    }.
+
+   
+public define Printable_tree format(String c_ticket, 
+                                    String s_ticket, 
+                                    Web_item i). 
+
+
+public define Printable_tree
+ format(List(Table_option) l) =
+  if l is 
+    {
+      [ ] then [ ],
+      [h . t] then [if h is 
+         {
+           background_color(c) then [" bgcolor=", (String)format(c)],
+           background_image(f) then [" background=",f],
+           border              then [" border"],
+           nude                then [" border=\"0\" cellspacing=\"0\" cellpadding=\"0\""],
+           border(e,top,i)     then [" border=",e," cellspacing=",top," cellpadding=",i],
+           border_color(c)     then [" bordercolor=", (String)format(c)],
+           absolute_width(n)   then [" width=",n]
+         }, format(t)]
+    }. 
+
+
+
+public define Printable_tree
+  format(List(Row_option) l) =
+    if l is
+      {
+        [ ] then [ ], 
+        [first . others] then [if first is
+                                 {
+                                   left       then [" align=left"],
+                                   h_center   then [" align=center"],
+                                   right      then [" align=right"],
+                                   top        then [" valign=top"],
+                                   v_center   then [" valign=center"],
+                                   bottom     then [" valign=bottom"],
+                           absolute_height(n) then [" height=\"",n,"\""], 
+                                   base_line  then [" valign=baseline"],
+                                   background_color(c) then [" bgcolor=",(String)format(c)]
+                                 },
+                               format(others)]
+      }.
+
+
+
+
+public define Int32
+  percentage(Int32 n) =
+         if n < 0 then 0 
+    else if n > 100 then 100
+    else n. 
+
+ public define Int32 percentage(Int32 n) = n. 
+
+
+
+
+public define Printable_tree
+  format
+    (
+      List(Web_body_option) l
+    ) =
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then [format(h) . format(t)]
+    }.  
+
+
+
+
+public define Printable_tree
+  format(List(Cell_option) l) =
+    if l is
+      {
+        [ ] then [ ],
+        [first . others] then 
+          [if first is
+             {
+               left                then (Printable_tree)[" align=left"],
+               h_center            then (Printable_tree)[" align=center"],
+               right               then (Printable_tree)[" align=right"],
+               top                 then (Printable_tree)[" valign=top"],
+               v_center            then (Printable_tree)[" valign=center"],
+               bottom              then (Printable_tree)[" valign=bottom"],
+               base_line           then (Printable_tree)[" valign=baseline"],
+               background_color(c) then (Printable_tree)[" bgcolor=",(String)format(c)],
+               background_image(n) then (Printable_tree)[" style=\"background: url(",n,")\""],
+               absolute_width(w)   then (Printable_tree)[" width=",w],
+               relative_width(r)   then (Printable_tree)[" width=",percentage(r),""],
+               absolute_height(h)  then (Printable_tree)[" height=",h],
+               relative_height(r)  then (Printable_tree)[" height=",percentage(r),""],
+               columns(n)          then (Printable_tree)[" colspan=",n],
+               rows(n)             then (Printable_tree)[" rowspan=",n],
+               nowrap              then (Printable_tree)[" nowrap"]           
+             }
+          . format(others)]
+      }.
+
+
+
+public define Printable_tree
+  format
+    (
+      String c_ticket, 
+      String s_ticket, 
+      List(Cell) l
+    ) =
+   if l is
+     {
+       [ ] then [ ], 
+       [first . others] then 
+         [if first is cell(options,item) then 
+          ["<td",format(options),">",
+           format(c_ticket,s_ticket,item),"</td>"],
+          format(c_ticket,s_ticket,others)]
+     }.
+
+
+public define Printable_tree
+ format
+   (
+     String c_ticket, 
+     String s_ticket, 
+     List(Table_row) l
+   ) =
+  if l is
+    {
+      [ ] then [ ], 
+      [first_row . other_rows] 
+        then [if first_row is
+                          {
+                     row(options,cells) then
+                          [ "<tr",format(options),">",
+                            format(c_ticket,s_ticket,cells),"</tr>"]
+                          },
+              format(c_ticket,s_ticket,other_rows)]                    
+    }. 
+
+
+public define Printable_tree
+  format_choices
+    (
+      List(String) l
+    ) =
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then ["<option>",h . format_choices(t)]
+    }.
+
+
+public define Printable_tree
+  format_choices
+    (
+      List(String) l,
+      String selected
+    ) =
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then if h = selected 
+        then ["<option selected>",h . format_choices(t)]
+        else ["<option>",h . format_choices(t,selected)]
+    }.
+
+
+public define Printable_tree 
+  format_list
+    (
+      String c_ticket,
+      String s_ticket, 
+      List(Web_item) l
+    ) =
+  if l is
+    {
+      [ ] then [ ],
+      [h . t] then ["<li>",format(c_ticket,s_ticket,h),
+                           format_list(c_ticket,s_ticket,t)]
+    }.
+
+   
+public define String
+  format
+    (
+      WebStyle ws
+    ) =
+  if ws is 
+    {
+      background_image(fn)          then "background: url("+fn+")",
+      background_color(c)           then "background: "+format(c),
+      background_transparent        then "background: transparent",
+      background_repeat_horizontal  then "background: repeat-x",
+      background_repeat_vertical    then "background: repeat-y",
+      background_no_repeat          then "background: no-repeat",
+      color(wc)                     then if wc is 
+                                       {
+                                         rgb(r,g,b) then "color: rgb("+r+","+g+","+b+")",
+                                         _(c)       then "color: "+format(c)
+                                       },
+      float_to_left                 then "float: left",
+      float_to_right                then "float: right",
+      font_family(n)                then "font-family: "+n,
+      font_size(n)                  then "font-size: "+integer_to_string(n)+"pt",
+      italic                        then "font-style: italic",
+      oblique                       then "font-style: oblique",
+      small_capitals                then "font-variant: small-caps",
+      bold                          then "font-weight: bold",
+      bolder                        then "font-weight: bolder",
+      lighter                       then "font-weight: lighter",
+      line_height(h)                then "line-height: "+integer_to_string(h),
+      text_center                   then "text-align: center",
+      text_left                     then "text-align: left",
+      text_right                    then "text-align: right",
+      text_justify                  then "text-align: justify",
+      text_underline                then "text-decoration: underline",
+      text_blink                    then "text-decoration: blink",
+      text_line_through             then "text-decoration: line-through",
+      width(n)                      then "width: "+integer_to_string(n),
+    }. 
+   
+   
+public define Printable_tree
+  format
+    (
+      List(WebStyle) l
+    ) =
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        if t is 
+          {
+            [ ]     then [format(h)], 
+            [_ . _] then [format(h), "; " . format(t)]
+          }
+    }.
+   
+   
+define Printable_tree
+  format_polygon_coordinates
+    (
+      List((Int32,Int32)) vertices
+    ) =
+  if vertices is 
+    {
+      [ ] then [ ],
+      [h . t] then  
+        if h is (x,y) then 
+          if t is [] 
+          then [ x,",",y ] 
+          else [ x,",",y,"," . format_polygon_coordinates(t)]
+    }.
+   
+ define Printable_tree
+  format
+    (
+      List(Mouse_Sensitive_Zone) zones
+    ) =
+  if zones is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        [
+          if h is 
+           {
+             rectangle(lt,rb,url) then 
+               if lt is (left,top) then 
+               if rb is (right,bottom) then 
+                 [ "<area shape=rect coords=\"",left,",",top,",",right,",",bottom,
+                          "\" href=\"",url,"\">" ],
+             circle(c,r,url) then 
+               if c is (x,y) then 
+                 [ "<area shape=circle coords=\"",x,",",y,",",r,
+                          "\" href=\"",url,"\">" ],
+             polygon(vs,url) then 
+                 [ "<area shape=poly coords=\"",format_polygon_coordinates(vs),
+                          "\" href=\"",url,"\">" ]
+           }
+        . format(t)]
+    }. 
+
+define Printable_tree
+  format
+    (
+      List(Mouse_Sensitive_Zone) zones,
+      String                     c_ticket,
+      String                     s_ticket,
+    ) =
+  if zones is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        [
+          if h is 
+           {
+             rectangle(lt,rb,url) then 
+               if lt is (left,top) then 
+               if rb is (right,bottom) then 
+                 [ "<area shape=rect coords=\"",left,",",top,",",right,",",bottom,
+                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ],
+             circle(c,r,url) then 
+               if c is (x,y) then 
+                 [ "<area shape=circle coords=\"",x,",",y,",",r,
+                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ],
+             polygon(vs,url) then 
+                 [ "<area shape=poly coords=\"",format_polygon_coordinates(vs),
+                          "\" href=\"", url + "&c_ticket=" + c_ticket + "&s_ticket=" + s_ticket,"\">" ]
+           }
+        . format(t, c_ticket, s_ticket)]
+    }. 
+   
+variable Int32 map_number = 0. 
+
+define Printable_tree
+  format_mouse_sensitive_image
+    (
+      String image_file_name, 
+      List(Mouse_Sensitive_Zone) zones,
+      String c_ticket,
+      String s_ticket,
+    ) =
+  map_number <- (*map_number)+1; 
+  [
+    "<img src=\"",image_file_name,"\" usemap=\"#imsensmap",*map_number,"\" border=0>",
+    "<map name=\"imsensmap",*map_number,"\">",
+    format(zones, c_ticket, s_ticket),
+    "</map>"
+  ]. 
+   
+  
+   Find an 'upload' in a web item. 
+   
+define Bool
+  find_upload
+    (
+      Web_item i
+    ). 
+   
+define Bool
+  find_upload
+    (
+      List(Web_item) li
+    ) =
+  if li is 
+    {
+      [ ] then false, 
+      [h . t] then if find_upload(h) then true else find_upload(t)
+    }. 
+   
+define Bool
+  find_upload
+    (
+      Cell c
+    ) =
+  if c is cell(lo,wi) then find_upload(wi). 
+   
+define Bool
+  find_upload
+    (
+      List(Cell) lc
+    ) =
+  if lc is 
+    {
+      [ ] then false, 
+      [h . t] then if find_upload(h) then true else find_upload(t)
+    }.
+   
+   
+   
+define Bool
+  find_upload
+    (
+      Table_row tr
+    ) =
+  if tr is 
+    {
+      row(lo,lc) then find_upload(lc)
+    }. 
+   
+define Bool
+  find_upload
+    (
+      List(Table_row) l
+    ) =
+  if l is 
+    {
+      [ ] then false, 
+      [h . t] then 
+        if find_upload(h) then true else find_upload(t)
+    }. 
+   
+define Bool
+  find_upload
+    (
+      Web_item wi
+    ) =
+  if wi is 
+    {
+      [ ]                        then (Bool)false, 
+      [a . b]                    then (Bool)if find_upload(a) then true else find_upload(b), 
+      text(_)                    then (Bool)false, 
+      text_pt(_)                 then (Bool)false, 
+      text_nowrap(_)             then (Bool)false, 
+      text_nowrap_pt(_)          then (Bool)false, 
+      par(_)                     then (Bool)false, 
+      preformated_text(_)        then (Bool)false,
+      integer(_)                 then (Bool)false, 
+      float(_,_)                 then (Bool)false, 
+      center(i)                  then (Bool)find_upload(i), 
+      bigger(n,i)                then (Bool)find_upload(i), 
+      smaller(n,i)               then (Bool)find_upload(i), 
+      bold(i)                    then (Bool)find_upload(i), 
+      italic(i)                  then (Bool)find_upload(i), 
+      big(i)                     then (Bool)find_upload(i), 
+      very_big(i)                then (Bool)find_upload(i), 
+      style(_,i)                 then (Bool)find_upload(i), 
+      spacer(_,_)                then (Bool)false,
+      image(_)                   then (Bool)false,
+      image_d(_,_)               then (Bool)false, 
+      image_pt(_)                then (Bool)false, 
+      on_image(_,_)              then (Bool)false, 
+      turning_images(_,_)        then (Bool)false, 
+      rollover(_,_,_,_,_,_)      then (Bool)false, 
+      rollover(_,_,_,_,_,_,_,_)  then (Bool)false, 
+      mouse_sensitive_image(_,_) then (Bool)false,
+      background_sound(_,_)      then (Bool)false, 
+      form(_,c)                  then (Bool)find_upload(c), 
+      form_target(_,c,_)         then (Bool)find_upload(c), 
+      form(_,_,c)                then (Bool)find_upload(c), 
+      form_name(_,c)             then (Bool)find_upload(c), 
+      text_input(_,_,_)          then (Bool)false,
+      password_input(_,_)        then (Bool)false, 
+      text_area(_,_,_,_)         then (Bool)false, 
+      upload(_,_)                then (Bool)true, 
+      submit(_)                  then (Bool)false, 
+      submit_pt(_)                  then (Bool)false, 
+      submit(_,_)                then (Bool)false, 
+      submit_close(_,_)          then (Bool)false, 
+      submit_pt2(_,_)                then (Bool)false, 
+      image_submit(_,_)          then (Bool)false, 
+      image_submit(_,_,_,_)      then (Bool)false, 
+      hl_image_submit(_,_,_,_,_) then (Bool)false,
+      text_submit(_,_,_)         then (Bool)false, 
+      web_submit(_,c)            then (Bool)find_upload(c), 
+      button(_,_,_,_,_)          then (Bool)false, 
+      mark(_,_)                  then (Bool)false, 
+      mark_pt(_,_)               then (Bool)false, 
+      close_button               then (Bool)false, 
+      close_button(_)            then (Bool)false, 
+      label(_)                   then (Bool)false,
+      go_to_label(_,i)           then (Bool)find_upload(i), 
+      table(_,rows)              then (Bool)find_upload(rows), 
+      list(l)                    then (Bool)find_upload(l), 
+      link(_,i)                  then (Bool)find_upload(i), 
+      link(_,_,i)                then (Bool)find_upload(i), 
+      link_for_download(n,i)     then (Bool)find_upload(i), 
+      mail_to(_,i)               then (Bool)find_upload(i), 
+      select(_,_,_)              then (Bool)false, 
+      select(_,_,_,_)            then (Bool)false,
+      immediate_select(_,_,_)    then (Bool)false, 
+      radio_button(_,_)          then (Bool)false, 
+      checked_radio_button(_,_)  then (Bool)false, 
+      check_box(_,_)             then (Bool)false, 
+      checked_box(_,_)           then (Bool)false, 
+      link_to_window(_,i)        then (Bool)find_upload(i), 
+      link_to_window(_,_,i)      then (Bool)find_upload(i), 
+      link_to_window_with_ticket(_,_,_,i,_,_) then (Bool)find_upload(i), 
+      link_to_window_with_ticket_and_scroll(_,_,_,i,_,_) then (Bool)find_upload(i), 
+      link_to_window_with_ticket_and_scroll(_,_,_,_,i,_,_) then (Bool)find_upload(i), 
+      link_to_frame(_,_,i)       then (Bool)find_upload(i),
+    }.
+   
+   
+   The next function generates "enctype=multipart/form-data" or "", depending on the presence of
+   an 'upload' in form-content. 
+   
+define String
+  enctype
+    (
+      Web_item form_content
+    ) =
+  if find_upload(form_content)
+  then "enctype=multipart/form-data"
+  else "". 
+     
+define Printable_tree
+  set_turning_images_sources
+    (
+      Int32 i, 
+      String name, 
+      List(String) filenames
+    ) =
+  if filenames is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        ["   i",name,"[",i,"].src=\"",h,"\";"
+        . set_turning_images_sources(i+1,name,t)]
+    }.
+    
+public define Printable_tree
+  format
+    (
+      String c_ticket, 
+      String s_ticket,
+      Web_item wi
+    ) = 
+  if wi is
+    {
+      [ ]            then (Printable_tree)[ ],
+
+      [a . b]        then (Printable_tree)[format(c_ticket,s_ticket,a), " ", 
+                                           format(c_ticket,s_ticket,b)],
+   
+      text(String s)                then (Printable_tree)[s],
+   
+      text_pt(Printable_tree s)     then (Printable_tree)s,
+   
+      text_nowrap(String s)         then (Printable_tree)["<table><tr><td nowrap=\"nowrap>",s,"</td></tr></table>"],
+   
+      text_nowrap_pt(Printable_tree s) then 
+            (Printable_tree)["<table><tr><td \"nowrap\">",s,"</td></tr></table>"],
+   
+      par(s)                        then (Printable_tree)        
+        [ "<p align=\"justify\">", s, " </p>"],
+   
+      preformated_text(t) then (Printable_tree) ["<pre>",t,"</pre>"],
+   
+      integer(n)     then (Printable_tree)[n], 
+   
+      float(f,p)     then (Printable_tree)[float_to_string(f,p)],
+   
+      center(item)   then (Printable_tree)["<center>", format(c_ticket,s_ticket,item),"</center>"],
+   
+      bigger(n,item) then (Printable_tree)["<font size=\"+",n,"\">",format(c_ticket,s_ticket,item),"</font>"],
+   
+      smaller(n,item) then (Printable_tree)["<font size=\"-",n,"\">",format(c_ticket,s_ticket,item),"</font>"],
+   
+      bold(item)     then 
+        (Printable_tree)["<font style=\"font-weight: bold\">",format(c_ticket,s_ticket,item),"</font>"],
+   
+      italic(item)   then 
+        (Printable_tree)["<font style=\"font-style: italic\">",format(c_ticket,s_ticket,item),"</font>"],
+   
+      big(item)      then (Printable_tree)["<font size=\"+1\">",format(c_ticket,s_ticket,item),"</font>"],
+   
+      very_big(item) then (Printable_tree)["<h1>",format(c_ticket,s_ticket,item),"</h1>"],
+   
+      style(l,i)     then 
+        (Printable_tree)["<span style=\"", format(l), "\">", format(c_ticket,s_ticket,i), "</span>"],
+
+      spacer(w,h) then (Printable_tree) 
+        ["<img src=\"spacer.gif\" width=\"",w,"\" height=\"",h,"\" border=\"0\">"], 
+   
+      image(String f)               then (Printable_tree)["<img src=\"", f,"\" border=\"0\">"],
+   
+      image_d(fn,desc) then (Printable_tree)["<img src=\"", fn,"\" alt=\"",desc,"\" border=\"0\">"],
+   
+      image_pt(Printable_tree l)       then (Printable_tree)["<img src=\"", l,"\" border=\"0\">"],
+   
+      on_image(fn,x) then (Printable_tree)
+        ["<span style=\"background: url(",fn,")\">",format(c_ticket,s_ticket,x),"</span>"],
+   
+      turning_images(fns,msec) then if fns is [im0 . imo] then 
+        with name = "trni"+integer_to_string(new_web_count), n = 1+length(imo), (Printable_tree)
+        ["<script>",
+         "var i",name,"=new Array(",n,");",
+         "var n",name,"=0;", 
+         "for(var i=0; i<",n,"; i++) {", 
+         "  i",name,"[i]=new Image(); }",
+         set_turning_images_sources(0,name,(List(String))[im0 . imo]),
+   
+         "function a",name,"() {", 
+         "if (i",name,"[(n",name,"+1)%",n,"].complete)",
+         "{n",name,"=(n",name,"+1)%",n,";", 
+         "document.",name,".src=i",name,"[n",name,"].src; }",
+         "setTimeout(\"a",name,"()\",",msec,"); }",
+   
+         "setTimeout(\"a",name,"()\",",msec,");", 
+         "</script>", 
+         "<img src=\"",im0,"\" name=\"",name,"\" border=\"0\">"], 
+      
+      rollover(prlim,url,target,ion,ioff,descr) then (Printable_tree)
+       (images_to_load <- [simple(ion) . *images_to_load]; 
+        with name = "ron_"+integer_to_string(new_web_count), 
+        ["<a target=\"",target,"\" href=\"",url,
+        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',url) then "&" else "?")),
+        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+         "\" onmouseout=\"",name,".src='",ioff,
+         "';\" onmouseover=\"",name,".src='",ion,"';\"><img src=\"",ioff,
+         "\" name=\"",name,"\" alt=\"",descr,"\" border=\"0\"></a>"]), 
+   
+      rollover(prlim,url,target,ion,ioff,w,h,descr) then (Printable_tree)
+       (images_to_load <- [simple(ion) . *images_to_load]; 
+        with name = "ron_"+integer_to_string(new_web_count), 
+        ["<a target=\"",target,"\" href=\"",url,
+        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',url) then "&" else "?")),
+        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+         "\" onmouseout=\"",name,".src='",ioff,
+         "';\" onmouseover=\"",name,".src='",ion,"';\"><img src=\"",ioff,
+         "\" name=\"",name,"\" width=\"",w,"\" height=\"",h,"\" alt=\"",descr,"\" border=\"0\"></a>"]), 
+   
+      mouse_sensitive_image(fn,lz) then (Printable_tree)  
+               format_mouse_sensitive_image(fn,lz, c_ticket, s_ticket), 
+   
+      background_sound(sfn,loop) then (Printable_tree)
+        ["<embed src=\"", sfn, "\" autostart=\"true\" loop=\"", if loop then "true\">" else "false\">"],
+   
+      form(n,c)      then (Printable_tree)
+        ["<form ",enctype(c)," method=\"post\" action=\"", n, "\">", 
+         "<input type=\"hidden\" name=\"s_ticket\" value=\"",s_ticket,"\" />",
+         "<input type=\"hidden\" name=\"c_ticket\" value=\"",c_ticket,"\" />",
+          format(c_ticket,s_ticket,c),"</form>"],
+   
+      form_target(n,c,t) then (Printable_tree)
+        ["<form ",enctype(c)," method=\"post\" action=\"", n, "\" target=\"", t, "\">", 
+         "<input type=\"hidden\" name=\"s_ticket\" value=\"",s_ticket,"\" />",
+         "<input type=\"hidden\" name=\"c_ticket\" value=\"",c_ticket,"\" />",
+         format(c_ticket,s_ticket,c),"</form>"],
+   
+      form(n,l,c)    then (Printable_tree)
+        ["<form ",enctype(c)," method=\"post\" action=\"", n,"#", l, "\">", 
+         "<input type=\"hidden\" name=\"s_ticket\" value=\"",s_ticket,"\" />",
+         "<input type=\"hidden\" name=\"c_ticket\" value=\"",c_ticket,"\" />",
+         format(c_ticket,s_ticket,c),"</form>"],
+
+      form_name(fn,c)      then (Printable_tree)
+        [
+         // "<form ",enctype(c), "\" name=\"", fn, "\">", 
+          "<form  name=\"", fn, "\">", 
+         "<input type=\"hidden\" name=\"s_ticket\" value=\"",s_ticket,"\" />",
+         "<input type=\"hidden\" name=\"c_ticket\" value=\"",c_ticket,"\" />",
+          format(c_ticket,s_ticket,c),"</form>"],
+   
+      text_input(n,s,v) then (Printable_tree)
+        ["&nbsp; <input type=\"text\" name=\"", n, "\" size=\"", s, "\" value=\"", v,"\" />"],
+   
+      password_input(n,s) then (Printable_tree)
+        ["&nbsp; <input type=\"password\" name=\"", n, "\" size=\"", s,"\" />"],
+   
+      text_area(name,c,r,i) then (Printable_tree)
+        ["<textarea name=\"",name,"\" cols=\"",c,"\" rows=\"",r,"\" wrap=\"physical\">",i,"</textarea>"],
+   
+      upload(n,size) then (Printable_tree)
+       ["<input type=\"file\" size=\"",size,"\" multiple=\"multiple\" name=\"",n,"\" />"],
+   
+      submit(String t)              then (Printable_tree)["<input type=\"submit\" value=\"",t,"\" />"],
+   
+      submit_pt(Printable_tree t)      then (Printable_tree)["<input type=\"submit\" value=\"",t,"\" />"],
+   
+      submit(n, String t)           then (Printable_tree)
+        ["<input type=\"submit\" name=\"",n,"\" value=\"",t,"\">"],
+ 
+      submit_close(n, String t) then (Printable_tree)
+        ["<input type=\"submit\" name=\"",n,"\" value=\"",t,"\" onclick=\"window.top.close();\" />"],      
+   
+      submit_pt2(n, Printable_tree t)   then (Printable_tree)
+        ["<input type=\"submit\" name=\"",n,"\" value=\"",t,"\" />"],
+   
+      image_submit(n,ifn) then (Printable_tree)
+        ["<input type=\"image\" name=\"",n,"\" src=\"",ifn,"\" border=\"0\" />"],    
+   
+      image_submit(n,v,ifn,c) then (Printable_tree)
+          ["<img src=\"",ifn,"\" onmousedown=\"document.forms[0].action='",
+               n,"=",v,"'; document.forms[0].submit();\" />"],
+   
+      hl_image_submit(n,v,in,ifn,hlifn) then (Printable_tree)
+          ["<img src=\"",ifn,"\"",
+               //" name=\"",in,"\"",
+               " onmouseover=\"this.src='",hlifn,"'\"",
+               " onmouseout=\"this.src='",ifn,"'\"",
+               " onmousedown=\"document.forms[0].action='",
+               n,"=",v,"'; document.forms[0].submit();\" />"],
+   
+      text_submit(n,v,t)            then (Printable_tree)
+          ["<a href=\"",n,
+           (if (s_ticket = "" & c_ticket = "" & v = "") then "" else "?"),
+           (if s_ticket = "" then [ ] else ["s_ticket=",s_ticket,"&"]),
+           (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+           v,"\">",t,"</a>"],
+
+
+      web_submit(wa,i)             then (Printable_tree)
+          ["<a href=\"javascript:document.forms[0].action='",
+               wa,"'; document.forms[0].submit();\">",format(c_ticket,s_ticket,i),"</a>"],
+   
+      button(n, String t, String o, Int32 w, Int32 h)  then (Printable_tree)
+        ["<input type=button name=",n," value=\"",t,
+         "\"style=\"width=",w, ";height=", h, "\" ", "\" onclick=\"", o, "\";\" />"],
+
+      mark(n, String v)             then (Printable_tree)
+        ["<input type=\"hidden\" name=\"",n,"\" value=\"",v,"\" />"],
+   
+      mark_pt(n, Printable_tree v)     then (Printable_tree)
+        ["<input type=\"hidden\" name=\"",n,"\" value=\"",v,"\" />"],
+   
+      close_button     then (Printable_tree)
+             ["<form><input type=\"button\" value=\" Fermer \" onclick=\"window.top.close();\"></form>"],
+
+      close_button(ifn)     then (Printable_tree)
+             ["<form><input type=\"image\" name=\"close\" src=\"", ifn,
+              "\" onclick=\"window.top.close();\" /></form>"],
+
+/*
+      close_button(ifn)     then (Printable_tree)
+             ["<form><input type=\"button\" name=\"close\" src=\"", ifn,
+              "\" onclick=\"window.top.close();\"></form>"],
+*/   
+      label(name) then (Printable_tree)["<a name=\"",name,"\" />"],
+   
+      go_to_label(name,content) then (Printable_tree)["<a href=#",name,">",
+            format(c_ticket,s_ticket,content),"</a>"], 
+   
+      table(ops,rows)  then (Printable_tree)["<table ",
+                                  format(ops), ">",format(c_ticket,s_ticket,rows),"</table>"],
+   
+      list(l)   then (Printable_tree)["<ul>",format_list(c_ticket,s_ticket,l),"</ul>"],
+   
+      link(name,i)    then (Printable_tree)["<a href=\"",name,
+        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',name) then "&" else "?")),
+        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+        (if s_ticket = "" then [ ] else [if c_ticket = "" then "" else "&","s_ticket=",s_ticket]),
+        "\">",format(c_ticket,s_ticket,i),"</a>"],
+   
+      link(name,target,i)    then (Printable_tree)["<a target=\"",target,"\" href=\"",name,
+        (if (c_ticket = "" & s_ticket = "") then "" else (if member('?',name) then "&" else "?")),
+        (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+        (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+        "\">",format(c_ticket,s_ticket,i),"</a>"],
+   
+      link_for_download(fname,i) then (Printable_tree)
+        ["<a href=\"",fname,"?download\">",format(c_ticket,s_ticket,i),"</a>"],
+   
+      mail_to(addr,i) then (Printable_tree)["<a href=\"mailto:",addr,"\">",
+          format(c_ticket,s_ticket,i),"</a>"],
+   
+      select(name,size,choices) then (Printable_tree)
+         ["<select name=\"",name,"\" size=\"",size,"\">",format_choices(choices),"</select>" ],
+   
+      select(name,size,choices,selected) then (Printable_tree)
+         ["<select name=\"",name,"\" size=\"",size,"\">",format_choices(choices,selected),"</select>" ],
+   
+      immediate_select(name,size,choices) then (Printable_tree)
+         ["<select name=\"",name,"\" size=\"",size,"\" onchange=\"submit();\">",
+              format_choices(choices),"</select>" ],
+   
+      radio_button(n,v)           then (Printable_tree)
+        ["<input type=\"radio\" name=\"", n, "\" value=\"", v, "\" />"],
+   
+      checked_radio_button(n,v)   then (Printable_tree)
+        ["<input type=\"radio\" checked=\"checked\" name=\"", n, "\" value=\"", v, "\" />"],
+   
+      check_box(n,v)              then (Printable_tree)
+        ["<input type=\"checkbox\" name=\"", n, "\" value=\"", v, "\" />"],
+   
+      checked_box(n,v)            then (Printable_tree)
+        ["<input type=\"checkbox\" checked=\"checked\" name=\"", n, "\" value=\"", v, "\" />"],
+   
+      link_to_window(n,i) then (Printable_tree)
+        ["<a href=\"javascript:void window.open('",n,"','default','resizable,scrollbars');\">",
+            format(c_ticket,s_ticket,i),"</a>"],
+   
+      link_to_window(n,wn,i) then (Printable_tree)
+        ["<a href=\"javascript:void window.open('",n,"','",wn,"','resizable,scrollbars');\" />",
+             format(c_ticket,s_ticket,i),"</a>"],
+   
+      link_to_window_with_ticket(n,args,wn,i,w,h) then (Printable_tree)
+        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
+          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+          "&target=",wn,
+          if args="" then "" else "&",
+           args,"','",
+            wn,"','width=",w,",height=",h,"');\">",
+            format(c_ticket,s_ticket,i),"</a>"],
+
+      link_to_window_with_ticket_and_scroll(n,args,wn,i,w,h) then (Printable_tree)
+        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
+          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+          "&target=",wn,
+          if args="" then "" else "&",
+           args,"','",
+            wn,"','width=",w,",height=",h,", resizable,scrollbars');\">",
+            format(c_ticket,s_ticket,i),"</a>"],
+   
+      link_to_window_with_ticket_and_scroll(n,lab,args,wn,i,w,h) then (Printable_tree)
+        ["<a href=\"javascript:void window.open('",n,"?c_ticket=",c_ticket,
+          (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),
+          "&target=",wn,
+          if args="" then "" else "&",
+           args,"&#",lab, "','",
+            wn,"','width=",w,",height=",h,", resizable,scrollbars');\">",
+            format(c_ticket,s_ticket,i),"</a>"],
+   
+      link_to_frame(n,fn,i) then ["<a href=\"",n,
+           (if member('?',n) then "&" else "?"),
+           (if c_ticket = "" then [ ] else ["c_ticket=",c_ticket]),
+           (if s_ticket = "" then [ ] else ["&s_ticket=",s_ticket]),     
+           "\" target=\"",fn,"\">",
+           format(c_ticket,s_ticket,i),"</a>"]
+
+   }. 
+
+
+   
+define Printable_tree
+  add_tickets
+    (
+      String c_ticket, 
+      String s_ticket,
+      String url
+    ) =
+  if member('?',url)
+  then [url , "&c_ticket=", c_ticket, "&s_ticket=", s_ticket ]
+  else [url , "?c_ticket=", c_ticket, "&s_ticket=", s_ticket ]. 
+   
+define Printable_tree
+  add_tickets
+    (
+      String c_ticket, 
+      String s_ticket,
+      Printable_tree url
+    ) =
+  if member('?',url)
+  then [url , "&c_ticket=", c_ticket, "&s_ticket=", s_ticket ]
+  else [url , "?c_ticket=", c_ticket, "&s_ticket=", s_ticket ]. 
+   
+   
+define Printable_tree   
+  format
+    (
+      List(VFrame) frames,
+      String c_ticket, 
+      String s_ticket
+    ) =
+  if frames is 
+    {
+      [ ] then [ ], 
+      [h . t] then 
+        if h is frame(height,url,name) then 
+          [
+            "<frame src=\"",add_tickets(c_ticket,s_ticket,url), "\" name=\"",name,"\" frameborder=\"no\" />"
+          . format(t,c_ticket,s_ticket)]
+    }.
+
+   
+define String 
+  frame_size
+    (
+      Int32 s
+    ) =
+  if s =< 0 then "*" else integer_to_string(s). 
+   
+define String
+  frame_stack_rows
+    (
+      List(VFrame) frames
+    ) =
+  if frames is 
+    {
+      [ ] then "", 
+      [h . t] then if h is frame (height,url,name) then 
+        frame_size(height)+
+          if t is 
+            {
+              [ ] then "", 
+              [_ . _] then ","
+            }+frame_stack_rows(t)
+    }.
+   
+
+   
+   'crlf' is defined in 'basis.anubis'. 
+   
+   
+   
+define Printable_tree
+  standard_headers 
+    (
+      Int32 size
+    ) =
+  [
+    "HTTP/1.0 200 OK" + crlf +
+    "Server: Anubis" + crlf +
+    "Content-Type: text/html" + crlf +
+    "Content-Length: "+integer_to_string(size)+crlf+
+    crlf
+  ].
+   
+ define Printable_tree
+  download_headers
+    =
+  [
+    "HTTP/1.0 200 OK" + crlf +
+    "Content-Type: application/octet-stream" + crlf +
+    crlf
+  ].
+   
+define Printable_tree
+  apache_headers
+    = 
+  [
+    "Content-type: text/html" + crlf + 
+    crlf
+  ]. 
+   
+   
+define String
+  empty_javascript_source
+    =
+  "javascript:'<html><head></head><body></body></html>';".
+   
+public type HeaderSort:
+  empty,
+  anubis, 
+  apache. 
+
+   
+define Printable_tree
+  format_keywords
+    (
+      List(String) l
+    ) =
+  if l is 
+    {
+      [ ] then [ ], 
+      [h . t] then if t is [ ]
+        then [h]
+        else [h , ", " . format_keywords(t)]
+    }. 
+   
+define Printable_tree
+  format
+    (
+      WebMeta m
+    ) =
+  if m is 
+    {
+      keywords(l)        then ["<meta name=\"keywords\" content=\"",format_keywords(l),"\">"],
+      refresh(url,delay) then ["<meta http-equiv=\"Refresh\" content=\"",delay,"; URL=",url,"\">"], 
+      meta(n,c)          then ["<meta name=\"",n,"\" content=\"",c,"\">"], 
+      http_equiv(n,c)    then ["<meta http-equiv=\"",n,"\" content=\"",c,"\">"]
+    }.
+   
+define Printable_tree
+  format
+    (
+      List(WebMeta) metas
+    ) =
+  if metas is 
+    {
+      [ ] then [ ],
+      [h . t] then [format(h) . format(t)]
+    }. 
+   
+   
+   
+   
+   
+   
+public define Printable_tree
+  format
+    (
+      HeaderSort hs, 
+      String c_ticket, 
+      String s_ticket, 
+      Web_page p
+    ) =
+  if p is 
+   {
+  web_page(title,metas,head_scripts,body) then
+    with body =
+       [
+        "<html>",
+        "<head>",
+        "<title>", title, "</title>",
+        format(metas), 
+        head_scripts, 
+        "</head>",
+        "<body ",
+        if body is body(options,item) then 
+          with b_options = format(prepare(options)),
+           [b_options, " onload='body_onloads();", 
+                       if *images_to_load is [] then "" else " preload_images();",
+                       "'>", 
+            load_image_script(*images_to_load), 
+            reverse(*scripts),
+            "<script>",
+            "  function body_onloads() {",
+                 format(*body_onloads),
+            "}</script>",
+            format(c_ticket,s_ticket,item)
+           ],
+        "</body>",
+        "</html>"
+       ],
+      [
+        if hs is 
+           {
+              empty then [ ], 
+              anubis then standard_headers(length(body)), 
+              apache then apache_headers
+           } 
+        . body
+      ],
+  standard_frameset(title,metas,height,width,main) then
+    with body =
+      [
+        "<html>",
+        "<head>",
+        "<title>", title, "</title>",
+        format(metas), 
+        "</head>",
+        "<frameset frameborder=\"no\" border=\"0\" framespacing=\"0\"",
+        "    marginwidth=\"0\" marginheight=\"0\" cols=\"",width,",*\" rows=\"*\">",
+        "    <frame src=\"",empty_javascript_source,"\" name=\"left\" frameborder=\"no\"",
+        "        marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\">",
+        "  <frameset frameborder=\"no\" border=\"0\" framespacing=\"0\" rows=\"",height,",*\" cols=\"*\">",
+        "    <frame src=\"",empty_javascript_source,"\" name=\"top\"",
+                " marginwidth=\"0\" marginheight=\"0\" frameborder=\"no\" scrolling=\"no\">",
+        "    <frame src =\"", add_tickets(c_ticket,s_ticket,main), 
+              "\" name=\"main\" marginwidth=\"0\" marginheight=\"0\" frameborder=\"no\">",
+        "  </frameset>",
+        "</frameset>",
+        "</html>"
+      ],
+      [
+        if hs is 
+           {
+              empty then [ ], 
+              anubis then standard_headers(length(body)), 
+              apache then apache_headers
+           }
+        . body
+      ]
+    }.
+
+   
+public define Bool
+  print
+    (
+      String c_ticket, 
+      String s_ticket, 
+      Web_page p
+    ) =
+  print(format(anubis,c_ticket,s_ticket,p)).    
+   
+public define Bool
+  print_with_headers
+    (
+      HeaderSort hs,
+      String c_ticket, 
+      String s_ticket, 
+      Web_page p
+    ) =
+  print(format(hs,c_ticket,s_ticket,p)).    
+   
+public define Bool
+  print
+    (
+      Web_page p
+    ) =
+  print(format(anubis,"","",p)). 
+   
+   
+      
+   
+public define Bool
+  print_with_headers
+    (
+      HeaderSort hs, 
+      Web_page p
+    ) =
+  print(format(hs,"","",p)).
+   
+
+public define Cell
+  h_spacer
+    (
+      Int32 n
+    ) =
+  cell([absolute_width(n)],literal("&nbsp;")). 
+   
+public define Cell
+  v_spacer
+    (
+      Int32 n
+    ) =
+   cell([absolute_height(n)],literal("&nbsp;")).
+   
+public define Cell
+  empty = cell([],literal("&nbsp;")). 
+   
+
+   
+   *** Below is a simple gadget for counting visitors. It increments a counter (in a file)
+   at each call.  The  argument is the name of the file (relative  to the directory of the
+   server), and the file is created automatically. It returns the number of the visitor.
+
+public define Int32
+  get_visitor_number
+    ( 
+      String counter_file_name,
+    ) =
+    protect
+    if (RetrieveResult(Int32))retrieve(counter_file_name) is
+      {
+        cannot_find_file  then 
+          //
+          // It's time to create the file. 
+          //
+          if save((Int32)1,counter_file_name) is 
+            {
+              cannot_open_file then 0, 
+              write_error      then 0, 
+              ok               then 1
+            },
+        read_error    then 0, 
+        type_error    then 0, 
+        ok(n)         then 
+          //
+          // Increment the counter
+          //
+          if save(n+1,counter_file_name) is 
+            {
+              cannot_open_file then n, 
+              write_error      then n, 
+              ok               then n+1 
+            }
+      }. 
+   
+   
+   
+   
@@ -1825,9 +1825,9 @@ define String
                     {
                       absolute(w)      then ["width=\"",w-25],
                       percentage(w)    then ["width=\"95%\""]
-                    },"\"><tr><td align=right>",
+                    },"\"><tbody><tr><td align=right>",
              format_element(content),
-          "</td></tr></table></body></html>"
+          "</td></tr></tbody></table></body></html>"
          ], 
                           file_name = "sd"+hash+".html", 
                           file_path = private_download_directory+"/"+file_name, 
@@ -2105,7 +2105,7 @@ define Printable_tree
      ) =
    [ doctype_w3c_header, 
      "<html><head>",
-       "<meta http-equiv=\"Refresh\" content=\"0; URL=javascript:void window.open('/?t=','_top')\">",
+       "<meta http-equiv=\"Refresh\" content=\"0; URL=javascript:void window.open('/?t=','_top')\" />",
      "</head><body></body></html>"
    ].  
@@ -2831,7 +2831,7 @@ define List(Text_Option)
   /**
    * Extract the CSS class list from the list of Text_Option
    */
-define List(Text_Option)
+define List(CoreAttrs)
   get_css_class
   (
      List(Text_Option) l
@@ -2843,34 +2843,14 @@ define List(Text_Option)
     [h . t ]  then
-      if h is class(_) then
-       [ h .  get_css_class(t) ]
-      else if h is id(_) then
-       [ h .  get_css_class(t) ]
+      if h is class(name) then
+       [ class(name) .  get_css_class(t) ]
+      else if h is id(name) then
+       [ id(name) .  get_css_class(t) ]
       else
         get_css_class(t)
   }
   .
-
-define String 
-  format_text_options
-  (
-     List(Text_Option) l
-  )
-  =
-  with text_options = get_text_options(l),
-        css_classes = get_css_class(l),
-  if text_options is 
-  {
-    []    then "",
-    [_._] then " style=\"" + format(text_options) + "\" "
-  }
-  +
-  if css_classes is 
-  {
-    []    then "",
-    [_._] then format(css_classes)
-  }.
 define Printable_tree
    format
@@ -2973,6 +2953,26 @@ define String
       current + format_attrs(t)
   }.
+define String 
+  format_text_options
+  (
+     List(Text_Option) l
+  )
+  =
+  with text_options = get_text_options(l),
+        css_classes = get_css_class(l),
+  if text_options is 
+  {
+    []    then "",
+    [_._] then " style=\"" + format(text_options) + "\" "
+  }
+  +
+  if css_classes is 
+  {
+    []    then "",
+    [_._] then format_attrs(css_classes)
+  }.
+
 //define String
 //  _format
 //  (
@@ -3089,7 +3089,7 @@ define Printable_tree
                                         text, "</a>"
                                       ],
               javascript(s,h) then 
-                              [s,"<INPUT TYPE =\"button\" Value=\"",text,"\"", format_attrs(options), " onClick=\"",h,"\">"]
+                              [s,"<input type=\"button\" value=\"",text,"\"", format_attrs(options), " onclick=\"",h,"\" />"]
            }
          ], 
        submit(options, text) then 
@@ -3100,7 +3100,7 @@ define Printable_tree
                                         text, "</a>"
                                       ],
               javascript(s,h) then 
-                              [s,"<INPUT TYPE =\"submit\" Value=\"",text,"\"", format_attrs(options), " onClick=\"",h,"\">"]
+                              [s,"<input type=\"submit\" value=\"",text,"\"", format_attrs(options), " onclick=\"",h,"\" />"]
            }
          ], 
@@ -3108,12 +3108,12 @@ define Printable_tree
          [ if action is 
              {
                url(u)           then ["<a href=\"",u],
-               javascript(s,h)  then [s,"<a onMouseDown=\"",h]
+               javascript(s,h)  then [s,"<a onmousedown=\"",h]
              },
              "\" style=\"text-decoration:none\">",
-             "<img alt=\"",url_off,"\" src=\"",url_off,"\" border=0",
-               " onMouseOver=\"this.src='",url_on,"'\" ",
-                " onMouseOut=\"this.src='",url_off,"'\">",
+             "<img alt=\"",url_off,"\" src=\"",url_off,"\" border=\"0\"",
+               " onmouseover=\"this.src='",url_on,"'\" ",
+                " onmouseout=\"this.src='",url_off,"'\">",
            "</a>"
          ],
@@ -3121,12 +3121,12 @@ define Printable_tree
          [ if action is 
              {
                url(u)           then ["<a href=\"",u],
-               javascript(s,h)  then [s,"<a onMouseDown=\"",h]
+               javascript(s,h)  then [s,"<a onmousedown=\"",h]
              },
              "\" style=\"text-decoration:none\">",
-             "<img width=",w," height=",h," alt=\"",url_off,"\" src=\"",url_off,"\" border=0",
-               " onMouseOver=\"this.src='",url_on,"'\" ",
-                " onMouseOut=\"this.src='",url_off,"'\">",
+             "<img width=\"",w,"\" height=\"",h,"\" alt=\"",url_off,"\" src=\"",url_off,"\" border=\"0\"",
+               " onmouseover=\"this.src='",url_on,"'\" ",
+                " onmouseout=\"this.src='",url_off,"'\">",
            "</a>"
          ],
@@ -3136,7 +3136,7 @@ define Printable_tree
                url(u)           then ["<select href=\"",u]
                javascript(s,h)  then [s,"<select onchange=\"",h]
              },
-             "\" name=o",name," size=",size,">",
+             "\" name=\"o",name,"\" size=\"",size,"\">",
               format_choices(choices),"</select>"
          ],
        immediate_selector(name,size,choices,selected) then          
@@ -3145,7 +3145,7 @@ define Printable_tree
                url(u)           then ["<select href=\"",u]
                javascript(s,h)  then [s,"<select onchange=\"",h]
              },
-             "\" name=o",name," size=",size,">",
+             "\" name=\"o",name,"\" size=\"",size,"\">",
               format_choices(choices, selected),"</select>"
          ],
      }. 
@@ -3285,20 +3285,20 @@ define String
          if h is
             {
               core_attrs(core_attr_list)    then format_attrs(core_attr_list),       
-              left                          then " align=left",
-              h_center                      then " align=center",
-              right                         then " align=right",
-              top                           then " valign=top",
-              v_center                      then " valign=middle",
-              bottom                        then " valign=bottom",
-              base_line                     then " valign=baseline",
+              left                          then " align=\"left\"",
+              h_center                      then " align=\"center\"",
+              right                         then " align=\"right\"",
+              top                           then " valign=\"top\"",
+              v_center                      then " valign=\"middle\"",
+              bottom                        then " valign=\"bottom\"",
+              base_line                     then " valign=\"baseline\"",
               background_color(c)           then " bgcolor=\""+html_format(c)+"\"",
               background_image(n,o)         then " style=\"background: url("+n+")"+format(o)+"\"",
               width(w)                      then " width=\""+w+"\"",
               percentage_width(n)           then " width=\""+percent(n)+"%\"", 
-              height(h)                     then " height="+h,
-              columns(n)                    then " colspan="+n,
-              rows(n)                       then " rowspan="+n,
+              height(h)                     then " height=\""+h+"\"",
+              columns(n)                    then " colspan=\""+n+"\"",
+              rows(n)                       then " rowspan=\""+n+"\"",
               nowrap                        then " nowrap"          
             }
          + format(t)
@@ -3473,12 +3473,12 @@ define String
      ) =
    if l is 
      {
-       [ ] then if border_seen then "" else " border=0 cellspacing=0 cellpadding=0",
+       [ ] then if border_seen then "" else " border=\"0\" cellspacing=\"0\" cellpadding=\"0\"",
        [h . t] then if h is 
          {
            background_color(c)    then " bgcolor=\""+html_format(c)+"\""+format(t,border_seen), 
            background_image(url)  then " background="+url+format(t,border_seen),
-           border(o,top,i,c)      then " border="+o+" cellspacing="+top+" cellpadding="+i+
+           border(o,top,i,c)      then " border=\""+o+"\" cellspacing=\""+top+"\" cellpadding=\""+i+"\""+
                                          //" bordercolor="+format(c)+
                                          format(t,true), 
            width(w)               then " width=\""+w+"\""+format(t,border_seen),
@@ -3520,6 +3520,7 @@ define Printable_tree
        "   }\n", 
      "</script>",
      "<table>",
+      "<tbody>",
        "<tr>",
          "<td align=left valign=top",
             " width=",width,
@@ -3534,10 +3535,12 @@ define Printable_tree
          "</td>",
          "<td valign=bottom>",
            "<table>",
-             "<tr><td><img alt=\"sroll up\" src=\"scrollup.gif\"   onMouseDown=\"doscroll_",
+            "<tbody>",
+             "<tr><td><img alt=\"sroll up\" src=\"scrollup.gif\"   onmousedown=\"doscroll_",
                      idnum,"(0,20);\"></td></tr>",
-             "<tr><td><img alt=\"scroll down\" src=\"scrolldown.gif\" onMouseDown=\"doscroll_",
+             "<tr><td><img alt=\"scroll down\" src=\"scrolldown.gif\" onmousedown=\"doscroll_",
                      idnum,"(0,-20);\"></td></tr>",
+            "</tbody>",
            "</table>",
          "</td>",
        "</tr>",
@@ -3546,16 +3549,19 @@ define Printable_tree
         "<tr>",
           "<td align=right>",
              "<table>",
+              "<tbody>",
                "<tr>",
-                 "<td><img alt=\"scroll left\" src=\"scrollleft.gif\" onMouseDown=\"doscroll_",
+                 "<td><img alt=\"scroll left\" src=\"scrollleft.gif\" onmousedown=\"doscroll_",
                            idnum,"(20,0);\"></td>",
-                 "<td><img alt=\"scroll right\" src=\"scrollright.gif\" onMouseDown=\"doscroll_",
+                 "<td><img alt=\"scroll right\" src=\"scrollright.gif\" onmousedown=\"doscroll_",
                            idnum,"(-20,0);\"></td>",
                "</tr>",
+              "</tbody>",
              "</table>",
            "</td>",
          "</tr>",
         ] else [ ]), 
+      "</tbody>",
      "</table>"
    ]. 
@@ -3643,11 +3649,11 @@ define Printable_tree
        any_image(url)                then 
          ["<img alt=\"",url,"\" src=\"",url,"\">"],
        any_image(url,w,h)            then 
-         ["<img alt=\"",url,"\" src=\"",url,"\" width=",w," height=",h,">"],
+         ["<img alt=\"",url,"\" src=\"",url,"\" width=",w," height=",h," />"],
        any_table(opts,h_row, rows) then 
          ["<table ",format(reverse(opts),false),">",
             format(h_row,format_element),
-            format(rows,format_element),"</table>\n"],
+            "<tbody>",format(rows,format_element),"</tbody></table>\n"],
        any_center(e)                 then 
          ["<center>",format_element(e),"</center>"], 
        any_mail_to(email,elem)       then
@@ -3656,13 +3662,13 @@ define Printable_tree
          format_scroller(sn,w,h,cw,ch,new_idnum(ic_v),c,format_element), 
        any_fixed_size(w,h,c)         then 
          with url = create_secondary_document(site_directory,secret,sn,format_element,c,w), 
-         ["<object data=\"",url,"\" type=\"text/html\" width=",format(w)," height=",format(h)," >",
+         ["<object data=\"",url,"\" type=\"text/html\" width=\"",format(w),"\" height=\"",format(h),"\" >",
              "secondary document",
           "</object>"], 
        any_fixed_size_2(w,h,fn)        then
          with url = fn+"?zauth="+make_authorization(site_directory,secret,
                  fn),
-         ["<object data=\"",url,"\" type=\"text/html\" width=",format(w)," height=",format(h)," >",
+         ["<object data=\"",url,"\" type=\"text/html\" width=\"",format(w),"\" height=\"",format(h),"\" >",
              "secondary document",
           "</object>"],          
        any_actioner(c,t,a,an,eo,ja,fn)  then 
@@ -3735,49 +3741,49 @@ define Printable_tree
          format(cinfo,sn,ic_v,any_private_download(url,name,extra,action),format_element,is_https),    
        text_input(options, label_text, id, name, i, w)           then 
          [ "<label for=\"",id,"\">",label_text,"</label>",
-           "<input type=text name=o",name," id=",id," size=",w," value=\"",i,"\"",format_attrs(options),">"],
+           "<input type=\"text\" name=\"o",name,"\" id=\"",id,"\" size=\"",w,"\" value=\"",i,"\"",format_attrs(options)," />"],
        text_input_ro(options, label_text, id, name,i,w)           then 
          [ "<label for=\"",id,"\">",label_text,"</label>",
-           "<input readonly=\"readonly\" type=text name=o",name," id=",id," size=",w," value=\"",i,"\"",format_attrs(options),">"],
+           "<input readonly=\"readonly\" type=\"text\" name=\"o",name,"\" id=\"",id,"\" size=\"",w,"\" value=\"",i,"\"",format_attrs(options)," />"],
        password_input(options, label_text, id, name,i,w)         then 
          [ "<label for=\"",id,"\">",label_text,"</label>",
-           "<input type=password name=p",name," id=",id," size=",w," value=\"",i,"\"",format_attrs(options),">"],
+           "<input type=\"password\" name=\"p",name,"\" id=\"",id,"\" size=\"",w,"\" value=\"",i,"\"",format_attrs(options)," />"],
        text_area(opts,n,i,w,h)          then
-         ["<textarea ",format(opts)," name=o",n," cols=",w," rows=",h,">",i,"</textarea>"],
+         ["<textarea ",format(opts)," name=\"o",n,"\" cols=\"",w,"\" rows=\"",h,"\">",i,"</textarea>"],
        file_upload(label, id, n, w)            then 
          ["<label for=\"",id,"\">",label,"</label>",
-         	"<input type=file id=",id," size=",w," name=o",n,">"],
+         	"<input type=\"file\" id=\"",id,"\" size=\"",w,"\" name=\"o",n,"\" />"],
        selector(opts, label, id, n,s,cs)            then 
          ["<label for=\"",id,"\">",label,"</label>",
-          "<select name=o",n," size=",s,format_attrs(opts),">",format_choices(cs),"</select>"],
+          "<select name=\"o",n,"\" size=\"",s,"\" ",format_attrs(opts),">",format_choices(cs),"</select>"],
        selector(opts, label, id, n,s,cs,sd)         then 
          ["<label for=\"",id,"\">",label,"</label>",
-          "<select name=o",n," size=",s,format_attrs(opts),">",format_choices(cs,sd),"</select>"],
+          "<select name=\"o",n,"\" size=\"",s,"\" ",format_attrs(opts),">",format_choices(cs,sd),"</select>"],
        selector_c(opts, label, id, n,s,cs)            then 
          ["<label for=\"",id,"\">",label,"</label>",
-          "<select name=o",n," size=",s,format_attrs(opts),">",format_choices(cs),"</select>"],
+          "<select name=\"o",n,"\" size=\"",s,"\" ",format_attrs(opts),">",format_choices(cs),"</select>"],
        selector_c(opts, label, id, n,s,cs,sd)         then 
          ["<label for=\"",id,"\">",label,"</label>",
-          "<select name=o",n," size=",s,format_attrs(opts),">",format_choices(cs,sd),"</select>"],
+          "<select name=\"o",n,"\" size=\"",s,"\" ",format_attrs(opts),">",format_choices(cs,sd),"</select>"],
        radio_button(options, label_text, id, n, v, c)         then  
          [ "<label for=\"",id,"\">",label_text,"</label>",
-           "<input type=radio name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\"" else ""),format_attrs(options),">"],
+           "<input type=\"radio\" name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\"" else ""),format_attrs(options)," />"],
        radio_button_r(options, label_text, id, n, v, c)         then  
-         [ "<input type=radio name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\"" else ""),format_attrs(options),">",
+         [ "<input type=\"radio\" name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\"" else ""),format_attrs(options)," />",
          	 "<label for=\"",id,"\">",label_text,"</label>"],
        check_box(options, label_text, id, n, v, c)              then 
          [ if length(label_text) > 0 then ["<label for=\"",id,"\">",label_text,"</label>"] else [""],
-           "<input type=checkbox name=o",n," id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\" " else ""),format_attrs(options),">"]
+           "<input type=\"checkbox\" name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\" " else ""),format_attrs(options)," />"]
        check_box_r(options, label_text, id, n, v, c)              then 
-         [ "<input type=checkbox name=o",n," id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\" " else ""),format_attrs(options),">",
+         [ "<input type=\"checkbox\" name=\"o",n,"\" id=\"",id,"\" value=\"",v,"\"",(if c then " checked=\"checked\" " else ""),format_attrs(options)," />",
          	 if length(label_text) > 0 then ["<label for=\"",id,"\">",label_text,"</label>"] else [""] ]
        div(options, e)              then
         format(cinfo,sn,ic_v,any_div(options, e),format_element,is_https),    
        div_empty(options)           then
         format(cinfo,sn,ic_v,any_div_empty(options),format_element,is_https),
        hidden(name, value)          then
-         ["<input type=hidden name=o",name," value=\"",value,"\">"],
+         ["<input type=\"hidden\" name=\"o",name,"\" value=\"",value,"\" />"],
      }. 
@@ -3911,7 +3917,7 @@ define Printable_tree
          [
            "<form name=\"f",fn,"\"",
            format(cinfo,sn,ic_v,any_coreattrs(attributs),format_element,is_https),
-           " method=POST",
+           " method=\"post\"",
               enctype(c),
               " action=\"http",
                          if is_https then "s" else "",
@@ -3957,16 +3963,16 @@ define Printable_tree
      ) =
    if m is 
      {
-       keywords(l)        then ["<meta name=\"keywords\" content=\"",format_keywords(l),"\">\n"],
+       keywords(l)        then ["<meta name=\"keywords\" content=\"",format_keywords(l),"\" />\n"],
        refresh(co,ta,an,delay)  then 
                                ["<meta http-equiv=\"Refresh\" content=\"",delay,"; URL=",
-                                    make_actioner_url(cinfo,co,ta,state_name,an,[],is_https),"\">\n"], 
-       meta(n,c)          then ["<meta name=\"",n,"\" content=\"",c,"\">\n"], 
-       http_equiv(n,c)    then ["<meta http-equiv=\"",n,"\" content=\"",c,"\">\n"],
+                                    make_actioner_url(cinfo,co,ta,state_name,an,[],is_https),"\" />\n"], 
+       meta(n,c)          then ["<meta name=\"",n,"\" content=\"",c,"\" />\n"], 
+       http_equiv(n,c)    then ["<meta http-equiv=\"",n,"\" content=\"",c,"\" />\n"],
        generic_meta(l)    then ["<meta ",
                                   flat(map(((String,String) p) |-> if p is (n,v) then [n,"=\"",v,"\" "],
                                       l)),
-                                 ">\n"],
+                                 " />\n"],
        literal(s)         then [s]
      }.
@@ -4024,7 +4030,7 @@ define Printable_tree
      {
        [ ] then [ ], 
        [h . t] then 
-       [ ["<link rel=\"stylesheet\" type=\"text/css\" href=\"" + file_name(h) + "\">\n" ]
+       [ ["<link rel=\"stylesheet\" type=\"text/css\" href=\"" + file_name(h) + "\" />\n" ]
          . add_css_files(t)]
      }.
@@ -4077,7 +4083,7 @@ define Printable_tree
              add_css_styles(css_styles),
              add_css_files(css_files),
              add_js_files(js_files),
-             "<link rel=\"shortcut icon\" href=\"favicon.ico\">\n", 
+             "<link rel=\"shortcut icon\" href=\"favicon.ico\" />\n", 
              "<script type = \"text/javascript\" language=\"JavaScript\">",
     "  function show_local_popup(divname,stvname) {",
     "  if (document.layers) { var d = eval(document.divname); } else\n",
@@ -1454,7 +1454,7 @@ define List(Web_arg)
       *** [4.7] Reading the request line. 
    'read_request_line' reads three  words and a new line from the  connection. It tries to
-   recognize "GET" or "POST" in the first word, separates the URI from the query string in
+   recognize "get" or "post" in the first word, separates the URI from the query string in
    the second  word, transforms  the query string  into a  list of 'Web_arg',  and finally
    returns a datum of type 'HTTP_RequestLine' if no error arose.