if(typeof(HTMLElement)!= 'undefined'){
        HTMLElement.prototype.__defineGetter__("parentElement", function() {return (this.parentNode == this.ownerDocument) ? null : this.parentNode;});
}

function changemenu(){
	url=location.href;
	//if(url.length<22)url="http://www.tunl.duke.edu/~mep/";
	TagA=document.getElementById("mainmenu").getElementsByTagName("A");
	for(i=0;i<TagA.length;i++){
		if(url == TagA[i].href){
		//	tmp=TagA[i].parentElement;
		//	if(tmp.tagName=='LI') tmp.className='lion';
		TagA[i].className='lion';
		}
	}
}


window.onload=function(){
	changemenu();
}