var vent=0
function abrir(que,wid,hei) {
	if (vent && navigator.appName=='Microsoft Internet Explorer') vent.close();
	Izda=(screen.width-wid)/2
	Arriba=(screen.height-hei)/2
	
	//Izda=0
	//Arriba=0
	//wid=wid+25
	
	cadena='width='+wid+',height='+hei+',top='+Arriba+',left='+Izda+',toolbar=no,location=no,status=no,menubar=no,resizable=no,scrollbars=no'
	vent=window.open(que,'vent',cadena)
	vent.moveTo(Izda,Arriba)
	vent.focus()
}
function abrir2(que,wid,hei) {
	if (vent && navigator.appName=='Microsoft Internet Explorer') vent.close();
	Izda=(screen.width-wid)/2
	Arriba=(screen.height-hei)/2
	
	//Izda=0
	//Arriba=0
	//wid=wid+25
	
	cadena='width='+wid+',height='+hei+',top='+Arriba+',left='+Izda+',toolbar=no,location=no,status=no,menubar=no,resizable=yes,scrollbars=yes'
	vent=window.open(que,'vent',cadena)
	vent.moveTo(Izda,Arriba)
	vent.focus()
}
var MOSTRAR_TODOS= false;

function mostrarDiv(nCual){
if (MOSTRAR_TODOS){
	document.getElementById("op"+nCual).style.display= ( document.getElementById("op"+nCual).style.display=="block"? "none": "block");
	}
else {
	for (nCont=1; document.getElementById("op"+nCont);nCont++){
	   if (nCont==nCual)
			document.getElementById("op"+nCont).style.display= ( document.getElementById("op"+nCont).style.display=="block"? "none": "block");
	   else
   			document.getElementById("op"+nCont).style.display= "none" ;
		}
	}	
}

function mostrarTodosDiv(){
	for (nCont=1;document.getElementById("op"+nCont);nCont++){
		document.getElementById("op"+nCont).style.display= ( MOSTRAR_TODOS? "none": "block");
		}
	MOSTRAR_TODOS= !MOSTRAR_TODOS;	
}