/* getImages
 * Returns an array with 'src' attribute from the images within a parent element of given id
 * 	id - The id of the parent element holding the images
 *
 * For example:
 * 	<div id="ID">
 *		<img src="photo1.jpg">
 *		<img src="photo2.jpg">
 * 	</div>
 * Would call:
 * 	getImages("ID")
 * And return:
 *	["photo1.jpg", "photo2.jpg"]
 */
function getImages(id)
{
	var result = new Array();
	var parentElement = document.getElementById(id);
	var images = parentElement.getElementsByTagName("img");
	
	for(var i = 0; i < images.length; i++)
	{
		result.push(images[i].src);
	}
	
	return result;
}

function formateArrayForFadeshow(images)
{
	var result = new Array();
	
	for(var i = 0; i < images.length; i++)
	{
		result.push([images[i], "", ""]);
	}
	
	return result;
}


////NO need to edit beyond here/////////////
 
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
 * Initializes the process
 *		theimages - array list of image paths
 */
function fadeshow(theimages, fadewidth, fadeheight, borderwidth, delay, pause, displayorder)
{
	this.pausecheck = pause
	this.mouseovercheck = 0
	this.delay = delay
	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(); }) //thanks to Mike (aka Mwinter) :)
	}
	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);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 (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 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 (this.theimages[picindex][1]!="") //if associated link exists for image
		{
			slideHTML='<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">'
		}
		slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">'
		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=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 (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()
	}