function choices()
{
//elegir el numero de banner que se desean insertar, ej: 7
	this[0] = 4;

// PRIMER BANNER, Shopall General 120x600

this[1] = '<iframe allowtransparency="true" src="http://www.codigobarras.com/share-ht/jedis/ad_tpl.php?ic=2471&amp;r=7177" width="120" height="616" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" align="middle"></iframe>';

// SEGUNDO BANNER, Netfilia 120x600 Rota

this[2] = '<iframe name=afi120x600' + ' src="http://www.netfilia.com/contenidos/insert.html?cmf=2023&con_capa=1&contenido=120x600&web=1317&p=2039896429&id=hirYaXnD7lN92&url='+escape(location.href)+'"' + ' width=120 height=600 frameBorder=no border=0 marginWidth=0 marginHeight=0 scrolling=no style="border-style:none;" >' + '</iframe>';
   
// TERCER BANNER, Tradedoubler 120x600 Rota

this[3] = '<script type="text/javascript" src="http://imp.tradedoubler.com/imp?type(js)pool(22524)a(287784)" charset="ISO-8859-1"></script>';
   
// CUARTO BANNER,  Tradedoubler 120x600 Rota

this[4] = '<script type="text/javascript" src="http://imp.tradedoubler.com/imp?type(js)pool(22524)a(287784)" charset="ISO-8859-1"></script>';
  

//si se pone arriba ej: 9 aqui aņadir this[9]=' codigo ';

}
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());