window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);

var d=document, imgs = new Array(), link = new Array(), zInterval = null, current=0, pause=false, clogo=0, logo=getCookie("logo");;

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


	css = d.createElement("link");
	css.setAttribute("href","fade.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);
	link = d.getElementById("imageContainer").getElementsByTagName("a");
	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;	
	
	var j = supporters[logo].split("-");
	imgs[0].src = ""+j[0];
	link[0].href = "http://"+j[1];
	
	logo++;
	if(logo >= supporters.length)
	{
	 	logo = 0;
	}
	
	var i = supporters[logo].split("-");
	imgs[1].src = ""+i[0];
	link[1].href = "http://"+i[1];
	setTimeout(so_xfade,1000);
}

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<=0) {
		imgs[current].style.display = "none";
		logo++;
		if(logo >= supporters.length)
		{
	 		logo = 0;
		}
		i = supporters[logo].split("-");
		imgs[current].src = ""+i[0];
		link[current].href = "http://"+i[1];
		current = nIndex;
		setCookie("logo",logo,10);
		setTimeout(so_xfade,3000);
	} 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 setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
  	{
  		c_start=document.cookie.indexOf(c_name + "=");
  		if (c_start!=-1)
    	{ 
    		c_start=c_start + c_name.length+1; 
    		c_end=document.cookie.indexOf(";",c_start);
    		if (c_end==-1) c_end=document.cookie.length;
    		return unescape(document.cookie.substring(c_start,c_end));
    	} 
  	}
	return 0;
}