function abre(url,janela,larg,alt,scroll,pos1,pos2){
 window.open(url,janela,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars='+scroll+',resizable=no,copyhistory=no,top='+pos1+',left='+pos2+',screenY='+pos1+',screenX='+pos2+',width='+larg+',height='+alt);
} 

function showSub(lugar,obj){
	base = document.getElementById(lugar).getElementsByTagName("ul")
	for(i=0;i<base.length;i++){
		base[i].style.display="none";
	}
	document.getElementById(obj).style.display = "block";
}