/*****

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

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;
var imgs = new Array(); 
var zInterval = null; 
var current=0;
var pause=false;

function so_init() {
	if(!d.getElementById || !d.createElement)return;
	d.getElementById("imageContainer").style.display = "block";
	//css = d.createElement("link");
	//css.setAttribute("href","http://slayeroffice.com/code/imageCrossFade/xfade2.css");
	//css.setAttribute("rel","stylesheet");
	//css.setAttribute("type","text/css");
	//d.getElementsByTagName("head")[0].appendChild(css);
	
	imgs = d.getElementById("imageContainer").getElementsByTagName("table");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	setTimeout(so_xfade,10000);
}

function so_xfade() {
	
	var cOpacity = imgs[current].xOpacity;
	var nIndex = imgs[current+1]?current+1:0;
	
	var nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.15; 
	nOpacity+=.15;
	
	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;
		//d.getElementById("photo_label").innerHTML = imgs[current].getAttribute("alt");
		setTimeout(so_xfade,10000);
	} else {
		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 back_xfade() {
	
	var cOpacity = imgs[current].xOpacity;
	if (current - 1 == -1) 
		var nIndex = 5;
	else 
		var nIndex = current - 1;
	var nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.15; 
	nOpacity+=.15;
	
	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;
		//d.getElementById("photo_label").innerHTML = imgs[current].getAttribute("alt");
	} else {
		setTimeout(back_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) + ")";
	}
	
}