					<!--

					/*==================================================*
					 $Id: slideshow.js,v 1.16 2003/10/14 12:39:00 pat Exp $
					 Copyright 2000-2003 Patrick Fitzgerald
					 http://slideshow.barelyfitz.com/

					 This program is free software; you can redistribute it and/or modify
					 it under the terms of the GNU General Public License as published by
					 the Free Software Foundation; either version 2 of the License, or
					 (at your option) any later version.

					 This program is distributed in the hope that it will be useful,
					 but WITHOUT ANY WARRANTY; without even the implied warranty of
					 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
					 GNU General Public License for more details.

					 You should have received a copy of the GNU General Public License
					 along with this program; if not, write to the Free Software
					 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
					 *==================================================*/

					// There are two objects defined in this file:
					// "slide" - contains all the information for a single slide
					// "slideshow" - consists of multiple slide objects and runs the slideshow

					//==================================================
					// slide object
					//==================================================
					function slide(src,link,text,target,attr) {
					  // This is the constructor function for the slide object.
					  // It is called automatically when you create a new slide object.
					  // For example:
					  // s = new slide();

					  // Image URL
					  this.src = src;

					  // Link URL
					  this.link = link;

					  // Text to display
					  this.text = text;

					  // Name of the target window ("_blank")
					  this.target = target;

					  // Custom duration for the slide, in milliseconds.
					  // This is an optional parameter.
					  // this.timeout = 3000

					  // Attributes for the target window:
					  // width=n,height=n,resizable=yes or no,scrollbars=yes or no,
					  // toolbar=yes or no,location=yes or no,directories=yes or no,
					  // status=yes or no,menubar=yes or no,copyhistory=yes or no
					  // Example: "width=200,height=300"
					  this.attr = attr;

					  // Create an image object for the slide
					  if (document.images) {
					    this.image = new Image();
					  }

					  // Flag to tell when load() has already been called
					  this.loaded = false;

					  //--------------------------------------------------
					  this.load = function() {
					    // This method loads the image for the slide

					    if (!document.images) { return; }

					    if (!this.loaded) {
					      this.image.src = this.src;
					      this.loaded = true;
					    }
					  }

					  //--------------------------------------------------
					  this.hotlink = function() {
					    // This method jumps to the slide's link.
					    // If a window was specified for the slide, then it opens a new window.

					    var mywindow;

					    // If this slide does not have a link, do nothing
					    if (!this.link) return;

					    // Open the link in a separate window?
					    if (this.target) {

					      // If window attributes are specified,
					      // use them to open the new window
					      if (this.attr) {
					        mywindow = window.open(this.link, this.target, this.attr);
  
					      } else {
					        // If window attributes are not specified, do not use them
					        // (this will copy the attributes from the originating window)
					        mywindow = window.open(this.link, this.target);
					      }

					      // Pop the window to the front
					      if (mywindow && mywindow.focus) mywindow.focus();

					    } else {
					      // Open the link in the current window
					      location.href = this.link;
					    }
					  }
					}

					//==================================================
					// slideshow object
					//==================================================
					function slideshow( slideshowname ) {
					  // This is the constructor function for the slideshow object.
					  // It is called automatically when you create a new object.
					  // For example:
					  // ss = new slideshow("ss");
					
					  // Name of this object
					  // (required if you want your slideshow to auto-play)
					  // For example, "SLIDES1"
					  this.name = slideshowname;

					  // When we reach the last slide, should we loop around to start the
					  // slideshow again?
					  this.repeat = true;

					  // Number of images to pre-fetch.
					  // -1 = preload all images.
					  //  0 = load each image is it is used.
					  //  n = pre-fetch n images ahead of the current image.
					  // I recommend preloading all images unless you have large
					  // images, or a large amount of images.
					  this.prefetch = -1;

					  // IMAGE element on your HTML page.
					  // For example, document.images.SLIDES1IMG
					  this.image;

					  // ID of a DIV element on your HTML page that will contain the text.
					  // For example, "slides2text"
					  // Note: after you set this variable, you should call
					  // the update() method to update the slideshow display.
					  this.textid;

					  // TEXTAREA element on your HTML page.
					  // For example, document.SLIDES1FORM.SLIDES1TEXT
					  // This is a depracated method for displaying the text,
					  // but you might want to supply it for older browsers.
					  this.textarea;

					  // Milliseconds to pause between slides.
					  // Individual slides can override this.
					  this.timeout = 3000;

					  // Hook functions to be called before and after updating the slide
					  // this.pre_update_hook = function() { }
					  // this.post_update_hook = function() { }

					  // These are private variables
					  this.slides = new Array();
					  this.current = 0;
					  this.timeoutid = 0;

					  //--------------------------------------------------
					  // Public methods
					  //--------------------------------------------------
					  this.add_slide = function(slide) {
					    // Add a slide to the slideshow.
					    // For example:
					    // SLIDES1.add_slide(new slide("s1.jpg", "link.html"))
  
					    var i = this.slides.length;
					  
					    // Prefetch the slide image if necessary
					    if (this.prefetch == -1) {
					      slide.load();
					    }

					    this.slides[i] = slide;
					  }

					  //--------------------------------------------------
					  this.play = function(timeout) {
					    // This method implements the automatically running slideshow.
					    // If you specify the "timeout" argument, then a new default
					    // timeout will be set for the slideshow.
  
					    // Make sure we're not already playing
					    this.pause();
  
					    // If the timeout argument was specified (optional)
					    // then make it the new default
					    if (timeout) {
					      this.timeout = timeout;
					    }
  
					    // If the current slide has a custom timeout, use it;
					    // otherwise use the default timeout
					    if (typeof this.slides[ this.current ].timeout != 'undefined') {
					      timeout = this.slides[ this.current ].timeout;
					    } else {
					      timeout = this.timeout;
					    }

					    // After the timeout, call this.loop()
					    this.timeoutid = setTimeout( this.name + ".loop()", timeout);
					  }

					  //--------------------------------------------------
					  this.pause = function() {
					    // This method stops the slideshow if it is automatically running.
  
  					  if (this.timeoutid != 0) {

					      clearTimeout(this.timeoutid);
					      this.timeoutid = 0;

					    }
					  }

					  //--------------------------------------------------
					  this.update = function() {
					    // This method updates the slideshow image on the page

					    // Make sure the slideshow has been initialized correctly
					    if (! this.valid_image()) { return; }
  
					    // Call the pre-update hook function if one was specified
					    if (typeof this.pre_update_hook == 'function') {
					      this.pre_update_hook();
					    }

					    // Convenience variable for the current slide
					    var slide = this.slides[ this.current ];

					    // Determine if the browser supports filters
					    var dofilter = false;
					    if (this.image &&
					        typeof this.image.filters != 'undefined' &&
					        typeof this.image.filters[0] != 'undefined') {

					      dofilter = true;

					    }

					    // Load the slide image if necessary
					    slide.load();
  
					    // Apply the filters for the image transition
					    if (dofilter) {

					      // If the user has specified a custom filter for this slide,
					      // then set it now
					      if (slide.filter &&
					          this.image.style &&
					          this.image.style.filter) {

					        this.image.style.filter = slide.filter;

					      }
					      this.image.filters[0].Apply();
					    }

					    // Update the image.
					    this.image.src = slide.image.src;

					    // Play the image transition filters
					    if (dofilter) {
					      this.image.filters[0].Play();
					    }

					    // Update the text
					    this.display_text();

					    // Call the post-update hook function if one was specified
					    if (typeof this.post_update_hook == 'function') {
					      this.post_update_hook();
					    }

					    // Do we need to pre-fetch images?
					    if (this.prefetch > 0) {

					      var next, prev, count;

					      // Pre-fetch the next slide image(s)
					      next = this.current;
					      prev = this.current;
					      count = 0;
					      do {

					        // Get the next and previous slide number
					        // Loop past the ends of the slideshow if necessary
					        if (++next >= this.slides.length) next = 0;
					        if (--prev < 0) prev = this.slides.length - 1;

					        // Preload the slide image
					        this.slides[next].load();
					        this.slides[prev].load();

					        // Keep going until we have fetched
					        // the designated number of slides

					      } while (++count < this.prefetch);
					    }
					  }

					  //--------------------------------------------------
					  this.goto_slide = function(n) {
					    // This method jumpts to the slide number you specify.
					    // If you use slide number -1, then it jumps to the last slide.
					    // You can use this to make links that go to a specific slide,
					    // or to go to the beginning or end of the slideshow.
					    // Examples:
					    // onClick="myslides.goto_slide(0)"
					    // onClick="myslides.goto_slide(-1)"
					    // onClick="myslides.goto_slide(5)"
					  
					    if (n == -1) {
					      n = this.slides.length - 1;
					    }
  
					    if (n < this.slides.length && n >= 0) {
					      this.current = n;
  					  }
  
					    this.update();
					  }


					  //--------------------------------------------------
					  this.goto_random_slide = function(include_current) {
					    // Picks a random slide (other than the current slide) and
					    // displays it.
					    // If the include_current parameter is true,
					    // then 
					    // See also: shuffle()

					    var i;

					    // Make sure there is more than one slide
					    if (this.slides.length > 1) {

					      // Generate a random slide number,
					      // but make sure it is not the current slide
					      do {
					        i = Math.floor(Math.random()*this.slides.length);
					      } while (i == this.current);
 
					      // Display the slide
					      this.goto_slide(i);
					    }
					  }
					

					  //--------------------------------------------------
					  this.next = function() {
					    // This method advances to the next slide.

					    // Increment the image number
					    if (this.current < this.slides.length - 1) {
					      this.current++;
					    } else if (this.repeat) {
					      this.current = 0;
					    }

					    this.update();
					  }
					

					  //--------------------------------------------------
					  this.previous = function() {
					    // This method goes to the previous slide.
  
					    // Decrement the image number
					    if (this.current > 0) {
					      this.current--;
					    } else if (this.repeat) {
					      this.current = this.slides.length - 1;
					    }
  
					    this.update();
					  }


					  //--------------------------------------------------
					  this.shuffle = function() {
					    // This method randomly shuffles the order of the slides.

					    var i, i2, slides_copy, slides_randomized;

					    // Create a copy of the array containing the slides
					    // in sequential order
					    slides_copy = new Array();
					    for (i = 0; i < this.slides.length; i++) {
					      slides_copy[i] = this.slides[i];
					    }

					    // Create a new array to contain the slides in random order
					    slides_randomized = new Array();

					    // To populate the new array of slides in random order,
					    // loop through the existing slides, picking a random
					    // slide, removing it from the ordered list and adding it to
					    // the random list.

					    do {

					      // Pick a random slide from those that remain
					      i = Math.floor(Math.random()*slides_copy.length);

					      // Add the slide to the end of the randomized array
					      slides_randomized[ slides_randomized.length ] =
					        slides_copy[i];

					      // Remove the slide from the sequential array,
					      // so it cannot be chosen again
					      for (i2 = i + 1; i2 < slides_copy.length; i2++) {
					        slides_copy[i2 - 1] = slides_copy[i2];
					      }
					      slides_copy.length--;

					      // Keep going until we have removed all the slides

					    } while (slides_copy.length);

					    // Now set the slides to the randomized array
					    this.slides = slides_randomized;
					  }


					  //--------------------------------------------------
					  this.get_text = function() {
					    // This method returns the text of the current slide
					  
					    return(this.slides[ this.current ].text);
					  }


					  //--------------------------------------------------
					  this.get_all_text = function(before_slide, after_slide) {
					    // Return the text for all of the slides.
					    // For the text of each slide, add "before_slide" in front of the
					    // text, and "after_slide" after the text.
					    // For example:
					    // document.write("<ul>");
					    // document.write(s.get_all_text("<li>","\n"));
					    // document.write("<\/ul>");
  
					    all_text = "";
  
					    // Loop through all the slides in the slideshow
					    for (i=0; i < this.slides.length; i++) {
  
					      slide = this.slides[i];
    
					      if (slide.text) {
					        all_text += before_slide + slide.text + after_slide;
					      }
  
					    }
  
					    return(all_text);
					  }


					  //--------------------------------------------------
					  this.display_text = function(text) {
					    // Display the text for the current slide
  
					    // If the "text" arg was not supplied (usually it isn't),
					    // get the text from the slideshow
					    if (!text) {
					      text = this.slides[ this.current ].text;
					    }
					  
					    // If a textarea has been specified,					
					    // then change the text displayed in it
					    if (this.textarea && typeof this.textarea.value != 'undefined') {
					      this.textarea.value = text;
					    }

					    // If a text id has been specified,
					    // then change the contents of the HTML element
					    if (this.textid) {
					
					      r = this.getElementById(this.textid);
					      if (!r) { return false; }					
					      if (typeof r.innerHTML == 'undefined') { return false; }

					      // Update the text
					      r.innerHTML = text;
					    }
					  }


					  //--------------------------------------------------
					  this.hotlink = function() {
					    // This method calls the hotlink() method for the current slide.
  
					    this.slides[ this.current ].hotlink();
					  }


					  //--------------------------------------------------
					  this.save_position = function(cookiename) {
					    // Saves the position of the slideshow in a cookie,
					    // so when you return to this page, the position in the slideshow
					    // won't be lost.
  
					    if (!cookiename) {
					      cookiename = this.name + '_slideshow';
					    }
  
					    document.cookie = cookiename + '=' + this.current;
					  }


					  //--------------------------------------------------
					  this.restore_position = function(cookiename) {
					  // If you previously called slideshow_save_position(),
					  // returns the slideshow to the previous state.
  
					    //Get cookie code by Shelley Powers
  
					    if (!cookiename) {
					      cookiename = this.name + '_slideshow';
					    }
  
					    var search = cookiename + "=";
  
					    if (document.cookie.length > 0) {
					      offset = document.cookie.indexOf(search);
					      // if cookie exists
					      if (offset != -1) { 
					        offset += search.length;
					        // set index of beginning of value
					        end = document.cookie.indexOf(";", offset);
					        // set index of end of cookie value
					        if (end == -1) end = document.cookie.length;
					        this.current = parseInt(unescape(document.cookie.substring(offset, end)));
					        }
					     }
					  }
					

					  //--------------------------------------------------
					  this.noscript = function() {
					    // This method is not for use as part of your slideshow,
					    // but you can call it to get a plain HTML version of the slideshow
					    // images and text.
					    // You should copy the HTML and put it within a NOSCRIPT element, to
					    // give non-javascript browsers access to your slideshow information.
					    // This also ensures that your slideshow text and images are indexed
					    // by search engines.
  
					    $html = "\n";
  
					    // Loop through all the slides in the slideshow
					    for (i=0; i < this.slides.length; i++) {
  
					      slide = this.slides[i];
					  
					      $html += '<P>';
  
					      if (slide.link) {
					        $html += '<a href="' + slide.link + '">';
					      }
  
					      $html += '<img src="' + slide.src + '" ALT="slideshow image">';
  
  					    if (slide.link) {
					        $html += "<\/a>";
					      }
  
					      if (slide.text) {
					        $html += "<BR>\n" + slide.text;
					      }
  
					      $html += "<\/P>" + "\n\n";
					    }
  
					    // Make the HTML browser-safe
					    $html = $html.replace(/\&/g, "&amp;" );
					    $html = $html.replace(/</g, "&lt;" );
					    $html = $html.replace(/>/g, "&gt;" );
  
					    return('<pre>' + $html + '</pre>');
					  }


					  //==================================================
					  // Private methods
					  //==================================================

					  //--------------------------------------------------
					  this.loop = function() {
					    // This method is for internal use only.
					    // This method gets called automatically by a JavaScript timeout.
					    // It advances to the next slide, then sets the next timeout.
					    // If the next slide image has not completed loading yet,
					    // then do not advance to the next slide yet.

					    // Make sure the next slide image has finished loading
					    if (this.current < this.slides.length - 1) {
					      next_slide = this.slides[this.current + 1];
					      if (next_slide.image.complete == null || next_slide.image.complete) {
					        this.next();
					      }
					    } else { // we're at the last slide
					      this.next();
					    }
					    
					    // Keep playing the slideshow
					    this.play( );
					  }


					  //--------------------------------------------------
					  this.valid_image = function() {
					    // Returns 1 if a valid image has been set for the slideshow
  
					    if (!this.image)
					    {
					      return false;
					    }
					    else {
					      return true;
					    }
					  }

					  //--------------------------------------------------
					  this.getElementById = function(element_id) {
					    // This method returns the element corresponding to the id

					    if (document.getElementById) {
					      return document.getElementById(element_id);
					    }
					    else if (document.all) {
					      return document.all[element_id];
					    }
					    else if (document.layers) {
					      return document.layers[element_id];
					    } else {
					      return undefined;					
					    }
					  }
  

					  //==================================================
					  // Deprecated methods
					  // I don't recommend the use of the following methods,
					  // but they are included for backward compatibility.
					  // You can delete them if you don't need them.
					  //==================================================

					  //--------------------------------------------------
					  this.set_image = function(imageobject) {
					    // This method is deprecated; you should use
					    // the following code instead:
					    // s.image = document.images.myimagename;
					    // s.update();

					    if (!document.images)
					      return;
					    this.image = imageobject;
					  }

					  //--------------------------------------------------
					  this.set_textarea = function(textareaobject) {
					    // This method is deprecated; you should use
					    // the following code instead:
					    // s.textarea = document.form.textareaname;
					    // s.update();

					    this.textarea = textareaobject;
					    this.display_text();
					  }

					  //--------------------------------------------------
					  this.set_textid = function(textidstr) {
					    // This method is deprecated; you should use
					    // the following code instead:
					    // s.textid = "mytextid";
					    // s.update();

					    this.textid = textidstr;
					    this.display_text();
					  }
					}

			//-->