function nova_jan(newwindow)
{
      var desktop = window.open(newwindow,'new_window','toolbar=yes,location=yes,directories=yes,status=yes,scrollbars=yes,menubar=yes,resizable=yes');
}


function OpenWindow(pagina) {
       novaJanela = window.open(pagina, "cartao", "marginheight=0,toolbar=1,location=0,directories=0,status=yes,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width=760,height=450,left=10,top=10");
}

function AbreJanela(pagina) {
       novaJanela = window.open(pagina, "cartao", "resizable=1,scrollbars=1,height=520,width=500, left=0, top=0");
}

function valida_form(objeto)
{
  if (objeto.value.length < 3)
  {
		alert("Preencha este campo com pelo menos 3 caracteres.");
		objeto.focus();
		return (false);
  }
  return (true);
}