/*****

Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
steve@slayeroffice.com

Please leave this notice intact. 

Rewrite of old code found here: http://slayeroffice.com/code/imageCrossFade/index.html

*****/

window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);

var d=document, imgs = new Array(), zInterval = null, current=0, nIndex=0, pause=false;
var t1, t2;

function so_init(startIndex) 
{
	if(!d.getElementById || !d.createElement) return;

	imgs = d.getElementById("imageContainer_" + groupName).getElementsByTagName("img");

	for(var i=0;i<imgs.length;i++)
	{

	}

	if (!isNaN(startIndex))
	{
		current = startIndex;
		nIndex = imgs[current+1]?current+1:0;
	}
	else
	{
		current = 0;
		nIndex = imgs[current+1]?current+1:0;
	}
	
	for(var i=0;i<imgs.length;i++)
	{
		if (i==current)
		{
			imgs[i].style.display = "block";
			imgs[i].xOpacity = .99;
			imgs[i].style.opacity = .99;
			imgs[i].style.MozOpacity = .99;
			imgs[i].style.filter = "alpha(opacity=99)";

			if(document.getElementById("SlideLinkImage_" + i)) document.getElementById("SlideLinkImage_" + i).src = onImage;	

		}
		else
		{
			imgs[i].style.display = "none";
			imgs[i].xOpacity = 0;
			imgs[i].style.MozOpacity = 0;
			imgs[i].style.filter = "alpha(opacity=0)";

			if(document.getElementById("SlideLinkImage_" + i)) document.getElementById("SlideLinkImage_" + i).src = offImage;	
		}
	}	

	t1 = setTimeout(so_xfade, delay);
}

function so_xfade() 
{
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.05;
	nOpacity+=.05;
	
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]);
	setOpacity(imgs[nIndex]);
	
	if(cOpacity <= 0) 
	{	
		imgs[current].style.display = "none";
		current = nIndex;
		for(var i=0;i<imgs.length;i++)
		{
			if (i==current && imgs[nIndex].style.display != "none")
			{
				if(document.getElementById("SlideLinkImage_" + i)) document.getElementById("SlideLinkImage_" + i).src = onImage;	
			}
			else
			{
				if(document.getElementById("SlideLinkImage_" + i)) document.getElementById("SlideLinkImage_" + i).src = offImage;	
			}
		}	

		t1 = setTimeout(so_xfade, delay);
	}
	else 
	{
		t2 = setTimeout(so_xfade, 50);
	}
	
	function setOpacity(obj) 
	{
		if(obj.xOpacity>.99) 
		{
			obj.xOpacity = .99;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	}	
}

function selectimage(index)
{
	clearTimeout(t1);
	clearTimeout(t2);
	so_init(index - 1);
}

function pause()
{
	clearTimeout(t1);
	clearTimeout(t2);
}

function play()
{
	so_xfade();
}