/*****

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",slideshow_init);

var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;
if(!interval) 
	var interval = 4000;

var timer;

function slideshow_init()
{
	// DON'T FORGET TO GRAB THIS FILE AND PLACE IT ON YOUR SERVER IN THE SAME DIRECTORY AS THE JAVASCRIPT!
	// http://slayeroffice.com/code/imageCrossFade/xfade2.css
	css = d.createElement("link");
	css.setAttribute("href","css/xfade2.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	so_init();
}

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

	imgs = d.getElementById("imageContainer").getElementsByTagName("img");

	for(var i=0;i<imgs.length;i++) { 
		imgs[i].xOpacity = 0;
		imgs[i].style.opacity = "0";
		imgs[i].style.display = "none";
	}
	
	imgs[current].style.display = "block";
	imgs[current].xOpacity = 1;
	imgs[current].style.opacity = 1;
	imgs[current].style.MozOpacity = 1;
	imgs[current].style.filter = "alpha(opacity=" + (0.99*100) + ")";

	// selectors
	selects = d.getElementById("imageSelectors").getElementsByTagName("li");
	for(c=0;c<selects.length;c++)
		selects[c].className = "";// reset selectors
	selects[current].className = "selected"; // select first

	if(imgs.length==1) return; // only one element

	timer = setTimeout(so_xfade,interval);
}

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]);

	// selectors
	selects[nIndex].className = "selected"; // select new
	selects[current].className = ""; // deselect current
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		current = nIndex;
		timer = setTimeout(so_xfade,interval);
	} else {
		timer = 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 showImageNow(index)
{
	current = index;
	//alert(timer);
	clearTimeout(timer);
	so_init();
}