function changePic(elem){
	var img = elem.getAttribute("value");
	var imgLink = elem.getElementsByTagName("a");
	var theLink = imgLink[0].getAttribute("href");
	var imgHolder = document.getElementById("imgHolder");
	
	imgHolder.setAttribute("src",img);
	imgHolder.setAttribute("alt",img);
	imgHolder.onclick = function (){
this.parentNode.href=imgLink[0];
		this.parentNode.setAttribute("href",imgLink[0].toString());
	
		
	}
}

function prepareBanner(){
	if (!document.getElementsByTagName) return false;
  	if (!document.getElementById) return false;
	
	var banner = document.getElementById("banner");
	var bannerTabs = banner.getElementsByTagName("li");
	var ranNum= Math.floor(Math.random()*bannerTabs.length);
	
	for (i=0; i<bannerTabs.length; i++){
		bannerTabs[i].onclick=function(){
			changePic(this);
			return false;
		}
	}
	
	changePic(bannerTabs[0]);
	
}

addLoadEvent(prepareBanner);