var popUp=0;
function popUpContacto(){
//	alert(url);
	var left	= 600; 
	var top		= 250;
	var width	= 250 + 0; 
	var height	= 100 + 0;
	  if(popUp)
	  {
		if(!popUp.closed){ popUp.close();}
	  }
	  popUp = open('contacto.php', 'popUpWinEscuchar', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
	  popUp.focus();
}