startList = function() {
//detecta si es IE5 o mayor mirando document.all y getElem...//
if (document.all&&document.getElementById) {
	navRoot = document.getElementById("nav");
	var posisiones=[20,45,40,20,15,15,10]
	for (i=0; i<navRoot.childNodes.length; i++) {
	 node = navRoot.childNodes[i];
		if (node.nodeName=="LI") {
			node.onmouseover=function() {
				this.className+=" over";
				this.style.background="url(/imgs/fnd_over.gif) no-repeat "+posisiones[this.id]+" 0px";
  			}
  			node.onmouseout=function() {
  				this.className=this.className.replace(" over", "");
				this.style.background="none";
   			}
  	   }
  	}
 }
}
window.onload=startList;