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;
function so_init() {
	if(!d.getElementById || !d.createElement)return;
	imgs = d.getElementById("slideshow").getElementsByTagName("img");
	
	for(i=1;i<imgs.length;i++){
		var slidenum = i + 1;
		document.getElementById('slide'+slidenum).xOpacity = 0;
	}
	
	document.getElementById('slide1').style.display = "block";
	document.getElementById('slide1').xOpacity = .99;
		
	setTimeout(so_xfade, 4000);
}

function so_xfade() {
	
	cOpacity = document.getElementById('slide'+(current+1)).xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = document.getElementById('slide'+(nIndex+1)).xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;
	
	document.getElementById('slide'+(nIndex+1)).style.display = "block";
	document.getElementById('slide'+(current+1)).xOpacity = cOpacity;
	document.getElementById('slide'+(nIndex+1)).xOpacity = nOpacity;
		
	setOpacity(document.getElementById('slide'+(current+1))); 
	setOpacity(document.getElementById('slide'+(nIndex+1)));
	
	if(cOpacity<=0) {
		document.getElementById('slide'+(current+1)).style.display = "none";
	
		current = nIndex;
		
		setTimeout(so_xfade,4000);
	} 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) + ")";
	}
	
}