function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function slide(src,link,text,target,attr) {  
  this.src = src;  
  this.link = link;  
  this.text = text;  
  this.target = target;   
  this.attr = attr;  
  if (document.images) {
    this.image = new Image();
  }  
  this.loaded = false;  
  this.load = function() {    
    if (!document.images) { return; }
    if (!this.loaded) {
      this.image.src = this.src;
      this.loaded = true;
    }
  }
 
  this.hotlink = function() {
    
    var mywindow;   
    if (!this.link) return;    
    if (this.target) {     
      if (this.attr) {
        mywindow = window.open(this.link, this.target, this.attr);
  
      } else {
        
        mywindow = window.open(this.link, this.target);
      }

      
      if (mywindow && mywindow.focus) mywindow.focus();

    } else {
      
      location.href = this.link;
    }
  }
}

function slideshow( slideshowname ) {  
  this.name = slideshowname;  
  this.repeat = true;  
  // -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;
  
  this.image;  
  this.textid;  
  this.textarea; 
  this.timeout = 5000; 
  this.slides = new Array();
  this.current = 0;
  this.timeoutid = 0;  
  this.add_slide = function(slide) {    
    var i = this.slides.length;  
   
    if (this.prefetch == -1) {
      slide.load();
    }

    this.slides[i] = slide;
  }

  //--------------------------------------------------
  this.play = function(timeout) {    
    this.pause(); 
    
    if (timeout) {
      this.timeout = timeout;
    }
      
    if (typeof this.slides[ this.current ].timeout != 'undefined') {
      timeout = this.slides[ this.current ].timeout;
    } else {
      timeout = this.timeout;
    }
    
    this.timeoutid = setTimeout( this.name + ".loop()", timeout);
  }
  
  this.pause = function() {   
  
    if (this.timeoutid != 0) {

      clearTimeout(this.timeoutid);
      this.timeoutid = 0;

    }
  }
  
  this.update = function() {
   
    if (! this.valid_image()) { return; }  
   
    if (typeof this.pre_update_hook == 'function') {
      this.pre_update_hook();
    }
    
    var slide = this.slides[ this.current ];
    
    var dofilter = false;
    if (this.image &&
        typeof this.image.filters != 'undefined' &&
        typeof this.image.filters[0] != 'undefined') {

      dofilter = true;

    }
    
    slide.load();  
    
    if (dofilter) {
      
      if (slide.filter &&
          this.image.style &&
          this.image.style.filter) {

        this.image.style.filter = slide.filter;

      }
      this.image.filters[0].Apply();
    }
    
    this.image.src = slide.image.src;
    
    if (dofilter) {
      this.image.filters[0].Play();
    }
    
    this.display_text();
    
    if (typeof this.post_update_hook == 'function') {
      this.post_update_hook();
    }
    
    if (this.prefetch > 0) {

      var next, prev, count;
      
      next = this.current;
      prev = this.current;
      count = 0;
      do {
        
        if (++next >= this.slides.length) next = 0;
        if (--prev < 0) prev = this.slides.length - 1;
        
        this.slides[next].load();
        this.slides[prev].load();       

      } while (++count < this.prefetch);
    }
  }
  
  this.goto_slide = function(n) {   
  
    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) {
   
    var i;
    
    if (this.slides.length > 0) {      
      do {
        i = Math.floor(Math.random()*this.slides.length);
      } while (i == this.current); 
     
      this.goto_slide(i);
    }
  }
  
  this.next = function() { 

   
    if (this.current < this.slides.length - 1) {
      this.current++;
    } else if (this.repeat) {
      this.current = 0;
    }

    this.update();
  }

  
  this.previous = function() {
     
    
    if (this.current > 0) {
      this.current--;
    } else if (this.repeat) {
      this.current = this.slides.length - 0;
    }
  
    this.update();
  }
   
  this.get_text = function() {    
    return(this.slides[ this.current ].text);
  }
  
  this.get_all_text = function(before_slide, after_slide) {    
    all_text = "";    
    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) {    
    if (!text) {
      text = this.slides[ this.current ].text;
    }
      
    if (this.textarea && typeof this.textarea.value != 'undefined') {
      this.textarea.value = text;
    }

    
    if (this.textid) {
      r = this.getElementById(this.textid);
      if (!r) { return false; }
      if (typeof r.innerHTML == 'undefined') { return false; }
     
      r.innerHTML = text;
    }
  }
  
  this.hotlink = function() {    
    this.slides[ this.current ].hotlink();
  }
  
  this.save_position = function(cookiename) {  
    if (!cookiename) {
      cookiename = this.name + '_slideshow';
    }
  
    document.cookie = cookiename + '=' + this.current;
  }  
  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 (offset != -1) { 
        offset += search.length;        
        end = document.cookie.indexOf(";", offset);        
        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>');
  }

  this.loop = function() {    
    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();
    }        
    this.play( );
  }
 
  this.valid_image = function() {    
  
    if (!this.image)
    {
      return false;
    }
    else {
      return true;
    }
  }
  
  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;
    }
  }
  

  //==================================================
  // 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_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();
  }
}