var timer = 7000;

window.onload = so_init;

var d=document, total, stopTrigger, imgs = new Array(), controls = new Array(), tags = new Array(), preimage = new Array(), zInterval = null, current=0, nextPic, pause=false; foo = '';

function so_init() { if(document.getElementById('portal')) { // Only trigger the fade script on the home page!
	if((!d.getElementById || !d.createElement))return;

	css = d.createElement("link");
	css.setAttribute("href","xfade.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	tags = d.getElementById("tags").getElementsByTagName("div");
	controls = d.getElementById("controls").getElementsByTagName("div");
	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	total = imgs.length-1;
	for(i=1;i<imgs.length;i++) { 
		imgs[i].xOpacity = 0;
		preimage[i] = new Image(706,276);
		preimage[i].source = imgs[i].src;
	}
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	nextPic = setTimeout(so_xfade,timer);
} }

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]);

	if(cOpacity<=.50 && cOpacity>.45) {
		controlSwitch(nIndex);
	}
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		current = nIndex;
		nextPic = setTimeout(so_xfade,timer);
	} 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) + ")";
	}
	
}

function so_xfade2(foo) {
	clearTimeout(nextPic);
	stopTrigger = 1;
	for (i=0 ; i<imgs.length ; i++) { 
		imgs[i].style.display = 'none';
		imgs[i].style.opacity = 1;
		imgs[i].style.MozOpacity = 1;
		imgs[i].style.filter = "alpha(opacity=100)";
	}
	for (i=0 ; i<tags.length ; i++) { 
		tags[i].style.display = 'none';
	}
	for (i=0 ; i<controls.length ; i++) {
		controls[i].className = '';
	}
	current = foo;
	imgs[current].style.display = 'block';
	tags[current].style.display = 'block';
	controls[current].className = 'active';
}

function controlSwitch() {
	for (i=0 ; i<tags.length ; i++) { 
		tags[i].style.display = 'none';
	}
	for (i=0 ; i<controls.length ; i++) {
		controls[i].className = '';
	}
	tags[nIndex].style.display = 'block';
	controls[nIndex].className = 'active';
}