/*****************************************************************************
 * Ultimate Fade-In Slideshow (v1.51):
 * Dynamic Drive (http://www.dynamicdrive.com)
 * This notice MUST stay intact for legal use
 * Visit http://www.dynamicdrive.com/ for this script and 100s more.
 *****************************************************************************/

// array to cache fadeshow instances
var fadearray = new Array();

// array to cache corresponding clearinterval pointers
var fadeclear = new Array();

// modern dom browsers
var dom = (document.getElementById);
var iebrowser = document.all;

function fadeshow(theimages, fadewidth, fadeheight, borderwidth,
                  delay, pause, displayorder)
{
  this.pausecheck = pause;
  this.mouseovercheck = 0;
  this.delay = delay;

  //initial opacity degree (10%)
  this.degree = 10;

  this.curimageindex = 0;
  this.nextimageindex = 1;

  fadearray[fadearray.length] = this;

  this.slideshowid = fadearray.length-1;
  this.canvasbase = "canvas"+this.slideshowid;
  this.curcanvas = this.canvasbase+"_0";

  if (typeof displayorder != "undefined")
  {
    //thanks to Mike (aka Mwinter) :)
    theimages.sort(function() { return 0.5 - Math.random(); });
  }

  this.theimages = theimages;
  this.imageborder = parseInt(borderwidth);

  //preload images
  this.postimages = new Array();

  for (p = 0; p < theimages.length; p++)
  {
    this.postimages[p] = new Image();
    this.postimages[p].src = theimages[p][0];
  }

  var fadewidth = fadewidth+this.imageborder*2;
  var fadeheight = fadeheight+this.imageborder*2;

  //if IE5+ or modern browsers (ie: Firefox)
  if (iebrowser && dom || dom)
  {
    document.write('<div id="master'+this.slideshowid+'" style="position:relative;width:'+fadewidth+'px;height:'+fadeheight+'px;overflow:hidden;"><div id="'+this.canvasbase+'_0" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div><div id="'+this.canvasbase+'_1" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div></div>');
  }
  else
  {
    document.write('<div><img name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"></div>');
  }

  //if IE5+ or modern browsers such as Firefox
  if (iebrowser && dom || dom)
  {
    this.startit();
  }
  else
  {
    this.curimageindex++;
    setInterval("fadearray["+this.slideshowid+"].rotateimage()", this.delay);
  }
}

function fadepic(obj)
{
  if (obj.degree < 100)
  {
    obj.degree+=10;

    if (obj.tempobj.filters && obj.tempobj.filters[0])
    {
      //if IE6+
      if (typeof obj.tempobj.filters[0].opacity == "number")
      {
        obj.tempobj.filters[0].opacity = obj.degree;
      }
      //else if IE5.5-
      else
      {
        obj.tempobj.style.filter = "alpha(opacity="+obj.degree+")";
      }
    }
    else if (obj.tempobj.style.MozOpacity)
    {
      obj.tempobj.style.MozOpacity = obj.degree/101;
    }
    else if (obj.tempobj.style.KhtmlOpacity)
    {
      obj.tempobj.style.KhtmlOpacity = obj.degree/100;
    }
    else if (obj.tempobj.style.opacity&&!obj.tempobj.filters)
    {
      obj.tempobj.style.opacity = obj.degree/101;
    }
  }
  else
  {
    clearInterval(fadeclear[obj.slideshowid]);

    obj.nextcanvas = (obj.curcanvas==obj.canvasbase+"_0") ? obj.canvasbase+"_0" : obj.canvasbase+"_1";
    obj.tempobj = iebrowser ? iebrowser[obj.nextcanvas] : document.getElementById(obj.nextcanvas);

    obj.populateslide(obj.tempobj, obj.nextimageindex);

    obj.nextimageindex = (obj.nextimageindex<obj.postimages.length-1) ? obj.nextimageindex+1 : 0;

    setTimeout("fadearray["+obj.slideshowid+"].rotateimage()", obj.delay);
  }
}

fadeshow.prototype.populateslide=function(picobj, picindex)
{
  var slideHTML = "";

  //if associated link exists for image
  if (this.theimages[picindex][1] != "")
  {
    slideHTML = '<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">';
  }

  slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">';

  //if associated link exists for image
  if (this.theimages[picindex][1] != "")
  {
    slideHTML+='</a>';
  }

  picobj.innerHTML = slideHTML;
}


fadeshow.prototype.rotateimage=function()
{
  //if pause onMouseover enabled, cache object
  if (this.pausecheck == 1)
    var cacheobj = this;

  if (this.mouseovercheck == 1)
  {
    setTimeout(function(){ cacheobj.rotateimage() }, 100);
  }
  else if (iebrowser && dom || dom)
  {
    this.resetit();
    var crossobj = this.tempobj=iebrowser ? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas);
    crossobj.style.zIndex++;
    fadeclear[this.slideshowid] = setInterval("fadepic(fadearray["+this.slideshowid+"])",50);
    this.curcanvas = (this.curcanvas==this.canvasbase+"_0") ? this.canvasbase+"_1" : this.canvasbase+"_0";
  }
  else
  {
    var ns4imgobj = document.images['defaultslide'+this.slideshowid];
    ns4imgobj.src = this.postimages[this.curimageindex].src;
  }

  this.curimageindex = (this.curimageindex<this.postimages.length-1)? this.curimageindex+1 : 0;
}

fadeshow.prototype.resetit = function()
{
  this.degree = 10;

  var crossobj = iebrowser ? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas);

  if (crossobj.filters && crossobj.filters[0])
  {
    //if IE6+
    if (typeof crossobj.filters[0].opacity == "number")
    {
      crossobj.filters(0).opacity = this.degree;
    }
    //else if IE5.5-
    else
    {
      crossobj.style.filter = "alpha(opacity="+this.degree+")";
    }
  }
  else if (crossobj.style.MozOpacity)
  {
    crossobj.style.MozOpacity = this.degree/101;
  }
  else if (crossobj.style.KhtmlOpacity)
  {
    crossobj.style.KhtmlOpacity = this.degree/100;
  }
  else if (crossobj.style.opacity && !crossobj.filters)
  {
    crossobj.style.opacity = this.degree/101;
  }
}


fadeshow.prototype.startit=function()
{
  var crossobj = iebrowser ? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas);

  this.populateslide(crossobj, this.curimageindex);

  //IF SLIDESHOW SHOULD PAUSE ONMOUSEOVER
  if (this.pausecheck == 1)
  {
    var cacheobj = this;
    var crossobjcontainer = iebrowser ? iebrowser["master"+this.slideshowid] : document.getElementById("master"+this.slideshowid);
    crossobjcontainer.onmouseover = function(){ cacheobj.mouseovercheck=1 };
    crossobjcontainer.onmouseout = function(){ cacheobj.mouseovercheck=0 };
  }

  this.rotateimage();
}

// vim:ts=2:sw=2:et:sts=2:ht=2:foldmethod=marker