function Ventana_001 (URL){ 
  window.open(URL,"multi","width=400,height=300,top=300,left=40,scrollbars=NO,titlebar=NO,menubar=NO,toolbar=NO,directories=NO,location=NO,status=NO,resizable=NO") 
} 

function Ventana_002 (URL){ 
  window.open(URL,"multi","width=400,height=300,top=50,left=100,scrollbars=NO,titlebar=NO,menubar=NO,toolbar=NO,directories=NO,location=NO,status=NO,resizable=NO") 
}