/*****
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(), current=0, pause=false;
var timeoutID = 0;
var delay = 2000;

function so_init() {
	if(!d.getElementById || !d.createElement)return;
	
	css = d.createElement("link");
	css.setAttribute("href","http://www.quikforms.com/Shared/Styles/crossfade.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);
	
	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) {
		imgs[i].xOpacity = 0;
		//imgs[i].style.display = "none";
	}
	imgs[0].style.display = "block";
	imgs[0].xOpacity = 1;
	
	timeoutID = setTimeout(so_xfade, delay);
}

function setOpacity(obj) {
	if(obj.xOpacity>1) {
		obj.xOpacity = 1;
		//return;
	}
	obj.style.opacity = obj.xOpacity;
	obj.style.MozOpacity = obj.xOpacity;
	obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	obj.style.zindex = 1;
}

function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;
	//if(nIndex == 0) return;
	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) {
		//alert("END");
		imgs[current].style.display = "none";
		imgs[nIndex].style.display = "block";
		imgs[nIndex].xOpacity = 1;
		current = nIndex;
		clearTimeout(timeoutID);
		timeoutID = setTimeout(so_xfade, delay);
	} 
	else {
		timeoutID = setTimeout(so_xfade,100);
		//so_xfade();
	}
}