/***********************************************
* Ultimate Fade-In Slideshow (v1.5): © 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.
***********************************************/

var fadebgcolor = "white";
                
var fadearray = new Array(); //array to cache fadeshow instances
var fadeclear = new Array(); //array to cache corresponding clearinterval pointers
              
var dom = (document.getElementById); //modern dom browsers
var iebrowser = document.all;
 
 
// fadeshow has been extended to include a variable delay, 0-variabledelay, that is added to the specified delay.
// A link text or title field has been added to the data array theimages, and a css class has been added to the
// generated img tag.  Be sure to specify a fadeheight large enough to display the link text or title.
//   theimages is an array of [image path, link URL, link target, link text or title if no link URL] 
            
function fadeshow (theimages, fadewidth, fadeheight, borderwidth, delay, variabledelay, pause, displayorder)
{
    this.pausecheck = pause;
    this.mouseovercheck = 0;
    this.delay = delay;
    this.variabledelay = variabledelay;
    this.degree = 10; //initial opacity 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")
        theimages.sort( function(){return 0.5 - Math.random();} );
    this.theimages = theimages;
    this.imageborder = parseInt(borderwidth);
    
    this.postimages = new Array(); //preload images
    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 (iebrowser&&dom||dom) //if IE5+ or modern browsers (ie: Firefox)
        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);-moz-opacity:10;-khtml-opacity:10;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);-moz-opacity:10;background-color:'+fadebgcolor+'"></div></div>');
    else if (theimages[0][3] != "")
        document.write('<div><img class="galleryImage" name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"><br/>'+theimages[0][3]+'</div>');
    else
        document.write('<div><img class="galleryImage" name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"></div>');

    if (this.variabledelay > 0)
    {
    	this.delay = Math.round( Math.random() * this.variabledelay ) + this.delay;
    }
    
    if (iebrowser&&dom||dom) //if IE5+ or modern browsers such as Firefox
        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 (typeof obj.tempobj.filters[0].opacity == "number") //if IE6+
                obj.tempobj.filters[0].opacity = obj.degree;
            else //else if IE5.5-
                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
    {
        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 (this.theimages[picindex][1] != "") //if associated link exists for image
        slideHTML = '<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">';
    slideHTML += '<img class="galleryImage" src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">';
    if (this.theimages[picindex][3] != "") //if associated title exists for image
        slideHTML += '<br/>'+this.theimages[picindex][3];
    if (this.theimages[picindex][1] != "") //if associated link exists for image
        slideHTML += '</a>';
    picobj.innerHTML = slideHTML;
}


fadeshow.prototype.rotateimage = function()
{
    if (this.pausecheck == 1) //if pause onMouseover enabled, cache object
        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 (typeof crossobj.filters[0].opacity == "number") //if IE6+
            crossobj.filters(0).opacity = this.degree;
        else //else if IE5.5-
            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 = obj.degree / 100;
}


fadeshow.prototype.startit = function()
{
    var crossobj = iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas);
    this.populateslide( crossobj, this.curimageindex );
    if (this.pausecheck == 1)
    { //IF SLIDESHOW SHOULD PAUSE ONMOUSEOVER
        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();
}