function printPage() {
  if (window.print)
    window.print()
  else
    alert("Perdone, su navegador no soporta esta función.");
}
ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false


var visi="";
timerID= null;
	function shw(id,Yadd) {
		hde();
		
		if (ns4) document.layers[id].visibility = "show"
		else if (ie4) document.all[id].style.visibility = "visible"
		document.all[id].style.pixelTop=(document.all("menu").style.pixelTop+Yadd);
		//var cuanto=document.body.scrollTop;
		//alert(cuanto);
		visi=id;
		timeout();
	}
	function timeout(){
		clearTimeout(timerID);
		timerID=setTimeout("hde()",5000);
	}
	function hde() {
		if(visi!=""){
		if (ns4) document.layers[visi].visibility = "hide"
		else if (ie4) document.all[visi].style.visibility = "hidden"
		}
	}
	function opwin(url,barra,scrol,ancho,alto){
			open(""+url+"","vent","menubar="+barra+",width="+ancho+", height="+alto+", scrollbars="+scrol+", top="+((winH/2)-(alto/2))+", left="+((winW/2)-(ancho/2))+"")
					}