var winImagenes
function PopUp_Imagenes(prmtrURL)
	{
	var strParametros = "toolbar=no,location=no,directories=no,status=yes,menubar=no,"
	strParametros += "scrollbars=yes,copyhistory=no, left=50,screenX=50,top=50,screenY=50"
	strParametros += ",width=800,height=600,resizable=no"
	//si la ventana ya existe entonces la cerramos
    if (typeof(winImagenes) =="object")	
		{
		winImagenes.close()
		winImagenes=null
		}
	winImagenes = window.open(prmtrURL, "winImagenes2", strParametros)
	winImagenes.focus()
	}
	
function Cerrar_PopUp_Imagenes()
	{
	if (typeof(winImagenes) == "object")
		{winImagenes.close()
     	winImagenes=null}
	}