/*****
Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
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;

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

	imgs = d.getElementById("headertop").getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	imgs2 = d.getElementById("headerbottombox").getElementsByTagName("img");
	for(i=1;i<imgs2.length;i++) imgs2[i].xOpacity = 0;
	imgs2[0].style.display = "block";
	imgs2[0].xOpacity = .99;
	
	imgs3 = d.getElementById("headerbottom").getElementsByTagName("img");
	for(i=1;i<imgs3.length;i++) imgs3[i].xOpacity = 0;
	imgs3[0].style.display = "block";
	imgs3[0].xOpacity = .99;
	setTimeout(so_xfade,4000);
}

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

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.01; 
	nOpacity+=.01;
	
	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;
		so_xfade2();
		so_xfade3();
		setTimeout(so_xfade,4000);
	} else {
		so_xfade2();
		so_xfade3();
		setTimeout(so_xfade,10);
	}
}
	
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 so_xfade2() {
	cOpacity = imgs2[current].xOpacity;
	nIndex = imgs2[current+1]?current+1:0;

	nOpacity = imgs2[nIndex].xOpacity;
	
	cOpacity-=.01; 
	nOpacity+=.01;
	
	imgs2[nIndex].style.display = "block";
	imgs2[current].xOpacity = cOpacity;
	imgs2[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs2[current]); 
	setOpacity(imgs2[nIndex]);
		
}
function so_xfade3() {
	cOpacity = imgs3[current].xOpacity;
	nIndex = imgs3[current+1]?current+1:0;

	nOpacity = imgs3[nIndex].xOpacity;
	
	cOpacity-=.01; 
	nOpacity+=.01;
	
	imgs3[nIndex].style.display = "block";
	imgs3[current].xOpacity = cOpacity;
	imgs3[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs3[current]); 
	setOpacity(imgs3[nIndex]);
		
}