// buttons ==================================================================================
if (document.images) 
{
	img_prevon = new Image();
	img_prevon.src = "/Gallery/images/btn_prev_on.gif";
	img_prevoff = new Image();
	img_prevoff.src = "/Gallery/images/btn_prev_off.gif";
	img_nexton = new Image();
	img_nexton.src = "/Gallery/images/btn_next_on.gif";
	img_nextoff = new Image();
	img_nextoff.src = "/Gallery/images/btn_next_off.gif";
	img_playon = new Image();
	img_playon.src = "/Gallery/images/btn_play_on.gif";
	img_playoff = new Image();
	img_playoff.src = "/Gallery/images/btn_play_off.gif";
	img_stopon = new Image();
	img_stopon.src = "/Gallery/images/btn_stop_on.gif";
	img_stopoff = new Image();
	img_stopoff.src = "/Gallery/images/btn_stop_off.gif";
}

function mouseOn(imageName) 
{
	if (document.images) { document[imageName].src = eval(imageName + "on.src"); }
}

function mouseOff(imageName) 
{
	if (document.images) { document[imageName].src = eval(imageName + "off.src"); }
}

// 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(id, src, link, img_desc, img_name, comments, 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 Unique ID
	this.id = id;
	
  // Image URL
  this.src = src;

  // Link URL
  this.link = link;

  // Text to display
  this.img_desc = img_desc;

	// Name of the img to display
	this.img_name = img_name;
	
	// HTML comments
	this.comments = comments;
	
  // 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 method loads the image for the slide
  this.load = function() 
  {
    if (!document.images) { return; }

    if (!this.loaded) 
    {
      this.image.src = this.src;
      this.loaded = true;
    }
  }

  //--------------------------------------------------
  // This method jumps to the slide's link.
  // If a window was specified for the slide, then it opens a new window.
  this.hotlink = function() 
  {
    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); } 
      
      // If window attributes are not specified, do not use them
      // (this will copy the attributes from the originating window)
      else { mywindow = window.open(this.link, this.target); }

      // Pop the window to the front
      if (mywindow && mywindow.focus) mywindow.focus();

    }
    // Open the link in the current window
    else { 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 = false;

  // 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 = document.images.ss_img;

  // 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 = "ss_img_name";
	this.descid = "ss_img_desc";
	this.commentsid = "ss_img_comments";
	
  // 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 = 6000;   //TIcket 62536 Increased to 6000 from 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;
  this.startSlideIndex = -1;

  //--------------------------------------------------
  // 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 method implements the automatically running slideshow.
  // If you specify the "timeout" argument, then a new default
  // timeout will be set for the slideshow.
  this.play = function(timeout) 
  {  
		if (this.slides.length == 0) return; 
		
    // Make sure we're not already playing
    this.pause();
		this.playing = true;
		mouseOn('img_play');
		mouseOff('img_stop');
		
		// Mark the slide the show started on
		if (this.startSlideIndex == -1) this.startSlideIndex = this.current;
		
    // 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 method stops the slideshow if it is automatically running.
  this.pause = function() 
  { 
		mouseOn('img_stop');
		mouseOff('img_play');
		this.playing = false;
		
    if (this.timeoutid != 0) 
    {
      clearTimeout(this.timeoutid);
      this.timeoutid = 0;
    }
    
  }

  //--------------------------------------------------
  // This method updates the slideshow image on the page
  this.update = function() 
  {
    // 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 method advances to the next slide.
  this.next = function() 
  {
    // Increment the image number
    if (this.current < this.slides.length - 1) { this.current++; } 
    else { this.current = 0; }
		
		this.update();
  }


  //--------------------------------------------------
  // This method goes to the previous slide.
  this.previous = function()
  {
    // Decrement the image number
    if (this.current > 0) { this.current--; } 
    else if (this.repeat) { this.current = this.slides.length - 1; }
  
    this.update();
  }

	//--------------------------------------------------
	// This method finds the slide by ID and displays it
	this.showSlide = function(slideID)
	{
		for (var i=0; i < this.slides.length; i++)
		{
			if (this.slides[i].id == slideID)
			{
				this.current = i;
				this.update();
				return;
			}
		}
	}

  //--------------------------------------------------
  // This method randomly shuffles the order of the slides.
  this.shuffle = function() 
  {
    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 method returns the text of the current slide
  this.get_img_name = function()
	{
		return(this.slides[ this.current ].img_name);
	}
  this.get_img_desc = function() 
  {
		var strOut = '<small>Photo ' + (this.current + 1) + ' of ' + (this.slides.length) + '</small><br/>' + 
			this.slides[this.current].img_desc;
    return(strOut);
  }
	this.get_img_comments = function() 
	{
		return(this.slides[ this.current].img_comments);
	}
	
  //--------------------------------------------------
  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>");
  
    var all_text = "";
  
    // Loop through all the slides in the slideshow
    for (i=0; i < this.slides.length; i++) 
    {
      slide = this.slides[i];
    
      if (slide.img_desc) { all_text += before_slide + slide.img_desc + after_slide; }
    }
  
    return(all_text);
  }


  //--------------------------------------------------
  // Display the text for the current slide
  this.display_text = function() 
  {
    // 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) 
    {
      var obj = this.getElementById(this.textid);
			if (!obj) { return false;}
			if (typeof obj.innerHTML == 'undefined') { return false; }
			obj.innerHTML = this.get_img_name();
    }
    
		// If an image description has been specified, change the contents of the HTML element
		if (this.descid)
		{
			var obj = this.getElementById(this.descid);
			if (!obj) { return false;}
			if (typeof obj.innerHTML == 'undefined') { return false; }
			obj.innerHTML = this.get_img_desc();
		}
    
    // If an image comments have been specified, change the contents of the HTML element
		if (this.commentsid)
		{
			var obj = this.getElementById(this.commentsid);
			if (!obj) { return false;}
			if (typeof obj.innerHTML == 'undefined') { return false; }
			obj.innerHTML = this.get_img_comments();
		}
		
  }


  //--------------------------------------------------
  // This method calls the hotlink() method for the current slide.
  this.hotlink = function() 
  {
		this.slides[ this.current ].hotlink();
  }


  //--------------------------------------------------
  // 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.
  this.save_position = function(cookiename) 
  {
    if (!cookiename) { cookiename = this.name + '_slideshow'; }
    document.cookie = cookiename + '=' + this.current;
  }


  //--------------------------------------------------
  // If you previously called slideshow_save_position(),
  // returns the slideshow to the previous state.
  this.restore_position = function(cookiename) 
  {
    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 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.
  this.noscript = function() 
  {
    var $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.img_desc) { $html += "<BR>\n" + slide.img_desc; }
     
      $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 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.
  this.loop = function() 
  {
    // 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(); }
    } 
    // we're at the last slide
    else {  this.next();  }
    
    if (!this.repeat && (this.current == this.startSlideIndex)) {this.pause(); }
		else { this.play(); } // Keep playing the slideshow
  }

  //--------------------------------------------------
  // Returns 1 if a valid image has been set for the slideshow
  this.valid_image = function() 
  {
    if (!this.image) { return false; }
    else { return true; }
  }

  //--------------------------------------------------
  // This method returns the element corresponding to the id
  this.getElementById = function(element_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; }
  }
}