/***********************************************
* 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.
***********************************************/

/* hacked up by jim weller */

var fadebgcolor="#f3f3f3"
 
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
 
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

	this.fadewidth = fadewidth;
	this.fadeheight = fadeheight;
	 
	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
		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+"].cycleimage()", this.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]+'">'

	// set left and top on canvas object from images array JIM
	var styleString = '';

	if( this.postimages[picindex].width > 0 && this.postimages[picindex].height > 0 )
	{
		var myLeft = ((this.fadewidth - this.postimages[picindex].width  )/2) + "px"
		var myTop = ((this.fadeheight - this.postimages[picindex].height )/2) + "px"
		styleString = 'style="position: relative; left: ' + myLeft + '; top: ' + myTop + ';"'
	}

	slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px" ' + styleString + '>'
	
	if (this.theimages[picindex][1]!="") //if associated link exists for image
		slideHTML+='</a>'
	
	picobj.innerHTML=slideHTML
}
	 
	 
fadeshow.prototype.cycleimage=function(){
	if (this.pausecheck==1) //if pause onMouseover enabled, cache object
		var cacheobj=this

	if (this.mouseovercheck==1)
		setTimeout(function(){cacheobj.cycleimage()}, 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.cycleimage()
}




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+"].cycleimage()", obj.delay)
	}
}