function abre(pagina,altura,largura){
      window.open(pagina,'',"top=0,left=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=no,resizable=no,copyhistory=0,width=largura,height=altura");
}

function abre_completo(pagina){
var w=screen.width;
var h=screen.height;
      window.open(pagina,'',"top=0,left=0,toolbar=1,location=1,directories=1,status=1,menubar=1,scrollbars=yes,resizable=yes,copyhistory=1,width=w,height=h");
}