function slide(src,link,text,target,attr) {
// This is the constructor method 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;

  // Create an image object for the slide
  if (document.images) {
    this.image = new Image();
  }

  //--------------------------------------------------
  this.load = function() {
  // Load the image for the slide
    if (!document.images) { return; }
    if (!this.image.src) {
      this.image.src = this.src;
    }
  }

  //--------------------------------------------------
  this.hotlink = function() {
  // Jump to the slide's link.

    // Open the hotlink in the current window
    location.href = this.link;
  }
} // END OF SLIDE OBJECT

//##################################################
// slideshow object
//##################################################

function slideshow( slideshowname ) {
// This is the constructor method 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 as 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 object from your HTML page.
  // For example, document.images.SLIDES1IMG
  // Note: after you set this variable, you should call
  // the update() method to update the slideshow display.
  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;

  // Milliseconds to pause between slides
  this.timeout = 3000;

  // These are private variables
  this.slides = new Array();
  this.current = 0;
  this.timeoutid = 0;

  //--------------------------------------------------
  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) {
  // Start 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() {
  // Stops the slideshow if it is automatically running.
  
    if (this.timeoutid != 0)
    {
      clearTimeout(this.timeoutid);
      this.timeoutid = 0;
    }
  }

  //--------------------------------------------------
  this.update = function() {
  // Update the slideshow image and text 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();
  
    // 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();
      }
    }
  
    // Update the image.
    this.image.src = this.slides[ this.current ].image.src;
  
    // Update the text
    //this.display_text();
  }

  //--------------------------------------------------
  this.goto_slide = function(n) {
  // Jump to an individual slide number.
  // 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.
  // Thanks to Lennart Groetzbach (lennartg@web.de) for this code.
  // Examples:
  // <a href="javascript:myslides.goto_slide(0)">First</a>
  // <a href="javascript:myslides.goto_slide(-1)">Last</a>
  // <a href="javascript:myslides.goto_slide(5)">Catching a Fish</a>
  
    if (n == -1) {
      n = this.slides.length - 1;
    }
  
    if (n < this.slides.length && n >= 0) {
      this.current = n;
    }
  
    this.update();
  }

  //--------------------------------------------------
  this.next = function() {
  // Advance 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() {
  // Go to the previous slide.
  
    // Decrement the slide number
    if (this.current > 0) {
      this.current--;
    } else if (this.repeat) {
      this.current = this.slides.length - 1;
    }
  
    this.update();
  }
  
  

  //--------------------------------------------------
  this.get_text = function() {
  //  Return 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(myslideshow.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() {
  // Call the hotlink() method for the current slide.

    this.slides[ this.current ].hotlink();
  }

  //--------------------------------------------------
  // 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.
  
    // Go to the next image
    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)
    {
      // Stop the slideshow
      this.pause;
  
      // Display an error message
      window.status = "Warning: slideshow image not initialized for " + this.name;
          
      return 0;
    }
    else {
      return 1;
    }
  }

}