function dropdown(what,e) {
	what.className='hover';
	for(i=0;i<what.childNodes.length;i++) {
		if(what.childNodes[i].nodeName=="UL") {
			if(a=document.getElementById("intro")) {
//				a.style.visibility = "hidden";
			}
			ul=what.childNodes[i];
			ul.className="dropdown";
			return true;
		}
	}
}
function dropout(what,e) {
	what.className='';
	if(a=document.getElementById("intro")) {
//		a.style.visibility = "";
	}
	for(i=0;i<what.childNodes.length;i++) {
		if(what.childNodes[i].nodeName=="UL") {
			ul=what.childNodes[i];
			ul.className="";
			return true;
		}
	}
}