function slide(src,link,text,target,attr) {

  this.src = src;
  this.link = link;
  this.text = text;
  this.target = target; // name of the target window ("_blank")
  this.attr = attr; // attributes for the target window

  if (document.images) {
    this.image = new Image();
 }



//------------------------------------------------------------------------------------------------------------------------------------
  this.load = function() {
  // loads the image for the slide

    if (!document.images) { return; }

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

//------------------------------------------------------------------------------------------------------------------------------------
  this.hotlink = function() {
  // jumps to the slide's link.
  // ff a window was specified for the slide, then it opens a new window.

    if (this.target) {

      // If window attributes are specified, use them to open the new window
      if (this.attr) {
        window.open(this.link, this.target, this.attr);
  
      } else {
        // If window attributes are not specified, copy the attributes from the parent window
        window.open(this.link, this.target);
      }

    } else {
      // Open the hotlink in the current window
      location.href = this.link;
    }
  }
}

//------------------------------------------------------------------------------------------------------------------------------------

// slideshow object

function slideshow( slideshowname ) {
// This is the constructor 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;

  // 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.
  this.prefetch = -1;

  // IMAGE element on your HTML page.
    this.image;

  // ID of a DIV element that will contain the text.
  // Note: after set this variable, call the update() method to update the slideshow display.
  this.textid;

  // TEXTAREA element on your HTML page - this is a depracated method for displaying the text.
  this.textarea;
   
  this.timeout = 8000; // pause between slides

//------------------------------------------------------------------------------------------------------------------------------------
  // 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"))
  
    // If this version of JavaScript does not allow us to
    // change images, then we can't do the slideshow.
    if (!document.images) { return; }
  
    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 function implements the automatically running slideshow.
  
    // Make sure we're not already playing
    this.pause();
  
    // If a new timeout was specified (optional)
    // set it here
    if (timeout) {
      this.timeout = timeout;
    }
  
    // After the timeout, call this.loop()
    this.timeoutid = setTimeout( this.name + ".loop()", this.timeout);
  }

//------------------------------------------------------------------------------------------------------------------------------------
  this.pause = function() {
  // This function stops the slideshow if it is automatically running.
  
    if (this.timeoutid != 0)
    {
      clearTimeout(this.timeoutid);
      this.timeoutid = 0;
    }
  }

//------------------------------------------------------------------------------------------------------------------------------------
  this.update = function() {
  // This function updates the slideshow image on the page
  
    // Make sure the slideshow has been initialized correctly
    if (! this.valid_image()) { return; }
  
    // Load the slide image if necessary
    this.slides[ this.current ].load();
  
    // Update the image.
    //if (ie) document.images.slide.filters[0].apply()
    if (navigator.appVersion.indexOf("MSIE")>-1){ this.image.filters[0].apply()}
    this.image.src = this.slides[ this.current ].image.src;
    if (navigator.appVersion.indexOf("MSIE")>-1){ this.image.filters[0].play()}
    // Update the text
    this.display_text();

    // Pre-fetch the next slide image(s) if necessary
    if (this.prefetch > 0) {
      for (i = this.current + 1;
           i <= (this.current + this.prefetch) && i < this.slides.length;
           i++) {
        this.slides[i].load();
      }
    }
  }

//------------------------------------------------------------------------------------------------------------------------------------
  this.goto_slide = function(n) {
  // This function 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.next = function() {
  // This function advances to the next slide.
  //alert(this.current)
    // 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 function goes to the previous slide.
  
    // Decrement the image number
    if (this.current > 0) {
      this.current--;
    } 
    //if uncomment will jump to last
    //else if (this.repeat) {
    //  this.current = this.slides.length - 1;
    //}
  
    this.update();
  }

//------------------------------------------------------------------------------------------------------------------------------------
  this.get_text = function() {
  // This function 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) {
      this.textarea.value = text;
    }
  
    // If a text id has been specified,
    // then change the contents of the HTML element
    if (this.textid) {
      // Make sure we don't cause an error
      // for browsers that do not support getElementById
      if (!document.getElementById){ return false; }
  
      r = document.getElementById(this.textid);
      if (!r){ return false; }
      r.innerHTML = text;
    }
  }

//------------------------------------------------------------------------------------------------------------------------------------

  this.hotlink = function() {
  // This function 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  previously called slideshow_save_position(), returns the slideshow to the previous state.
  
  
    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 function 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 function is for internal use only.
  // This function 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( );
  }

//------------------------------------------------------------------------------------------------------------------------------------
  // Returns 1 if a valid image has been set for the slideshow
  
  this.valid_image = function() {
  
    if (!this.image)
    {
      // Stop the slideshow
      this.pause;
      // Display an error message
      window.status = "Error: slideshow image not initialized for " + this.name;
 
      return 0;
    }
    else {
      return 1;
    }
  }


}