/*****

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, waiting = true;

var i = 0, ran = false, old_opac = 0, old_moz = 0, old_filt = 0, old = -1, tempo = false;

var delay = 5000;

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","xfade2.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	imgs = d.getElementById("imageContainer").getElementsByTagName("div");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	setTimeout(so_xfade,delay);
}

function so_quickshow(id) {
	so_quickpause();
	if(id==current || (!waiting && id==(imgs[current+1]?current+1:0))) return;
	tempo = true;
	if(old!=-1) imgs[old].style.zIndex = 2;
	
	//document.getElementById('thisoo').innerHTML = old;
	imgs[id].style.zIndex = 3;
	
	old_opac = imgs[id].style.opacity;
	imgs[id].style.opacity = 1;
	old_moz = imgs[id].style.MozOpacity;
	imgs[id].style.MozOpacity = 1;
	old_filt = imgs[id].style.filter;
	imgs[id].style.filter = "alpha(opacity=100)";
	
	imgs[id].style.display = "block";
	
	if(old!=-1) so_quickhide_o();
	old = id;
	//imgs[current].style.display = "none";
}

function so_quickhide() {
	setTimeout(so_quickhide2,100);
}

function so_quickhide2() {
	if(!paused || tempo) so_quickhide_o();
	tempo = false;
}

function so_quickhide() {
	//document.getElementById('thisoo').innerHTML = old;
	if(old==-1) return;
	so_quickresume();
	if(old==current || (!waiting && old==(imgs[current+1]?current+1:0))) return;
	
	imgs[old].style.zIndex = 1;
	imgs[old].style.display = "none";
	
	imgs[old].style.opacity = old_opac;
	imgs[old].style.MozOpacity = old_moz;
	imgs[old].style.filter = old_filt;
	
	old = -1;
	//imgs[current].style.display = "block";
}

function so_quickpause() {
	pause = true;
	document.getElementById('pause').style.display = "block";
	//document.getElementById('thisoo').innerHTML = (pause?'paused':'running');
}

function so_quickresume() {
	pause = false;
	document.getElementById('pause').style.display = "none";
	//document.getElementById('thisoo').innerHTML = (pause?'paused':'running');
}

function so_xfade() {
	//document.getElementById('thisoo').innerHTML = "<br /><span class=\"small\">p: "+(pause?'t':'f')+" | q: "+(quick?'t':'f')+" | c: "+current+" | n: "+qnext+" | w: "+(waiting?'t':'f')+" | co: "+count+"</span>";
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	if(pause && waiting) {
		setTimeout(so_xfade,delay/2);
		return;
	}
	waiting = false;
	
	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;
		waiting = true;
		setTimeout(so_xfade,delay);
		i = 0;
	} else {
		setTimeout(so_xfade,100);
	}
	
	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) + ")";
	}
	
}