function cabecera()
{
document.writeln(" ");
document.writeln(" | ");
document.writeln(" |
");
document.writeln(" ");
}
function pie()
{
document.writeln("");
document.writeln("| ");
document.writeln("");
document.writeln(" |
");
}
function pieinicio()
{
document.writeln("");
document.writeln("| ");
document.writeln("");
document.writeln(" |
");
}