/*****

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, pause=false, next = 0, fading = false;
var interval = 5000; //5000 milliseconds
var timeout;
var paused = false;

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

	// 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","/assets/css/xfade2.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[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	next = current + 1;
	
	timeout = setTimeout(so_xfade, interval);
}

function so_xfade() {
    fading = true;
	cOpacity = imgs[current].xOpacity;
	//nIndex = imgs[current+1]?current+1:0;
	nIndex = imgs[next] ? next: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 = next;
		next = (current == (imgs.length -1) ) ? 0 : next = current + 1;
		
		if (!paused)
		    timeout = setTimeout(so_xfade, interval);
		    
		fading = false;
	} else {
		setTimeout(so_xfade,25);
	}
	
	function setOpacity(obj) {
		if(obj.xOpacity>.99) {
			obj.xOpacity = 1;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	}
	
}

function fadeNext()
{
    if (fading) return;
    
    pauseFade();
    next = (current == (imgs.length - 1)) ? 0 : current + 1;
    so_xfade();
}

function fadePrevious()
{
    if (fading) return;
    
    pauseFade();
    next = (current == 0) ? imgs.length - 1 : current - 1;
    so_xfade();
}

function playPause()
{
    if (paused)
        playFade();
    else
        pauseFade();
}

function pauseFade()
{
    if (!paused)
    {
        clearTimeout(timeout);
        paused = true;
    }
}

function playFade()
{
    if (paused)
    {
	    paused = false;
	    so_xfade();
	}
}

function setupLinks()
{
}