function choices()
{
//elegir el numero de banner que se desean insertar, ej: 6
this[0] = 1;
this[1] = '<script type="text/javascript"  src="http://www.netfilia.com/contenidos/insert_html.html?cmf=1991&con_capa=1&contenido=120x60&web=1317&p=704414636&id=hirYaXnD7lN92"></script>';
}
function popUpBanner(list)
{
var today = new Date();
var choiceInstance = new choices();
var Banner = choiceInstance[(today.getSeconds() % choiceInstance[0]) + 1];
}
function grabBanner()
{
var today = new Date();
var choiceInstance = new choices();
var Banner = choiceInstance[(today.getSeconds() % choiceInstance[0]) + 1];
return Banner;
}
document.writeln(grabBanner());