function muestrabanners(){


var how_many_ads = 3;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt='<a href="http://banner.titanpoker.com/cgi-bin/redir.cgi?id=N&member=mansion&profile=728esnb"><img alt="Clic aquí para jugar!" src="http://banner.titanpoker.com/cgi-bin/banner.cgi?id=N&member=mansion&profile=728esnb"/></a>';
}
if (ad==2) {
txt='<a href="http://es.partypoker.com/hp_landingpages/hm_es_lp_500.html?wm=3215892" target="_blank"><img src="http://banners.partypartners.com/images/marketing-materials/partypoker/spanish/gif/728x90/100Euros_Welcome_Bonus/728x90.gif" alt="Gif Banners" border="0" width="728" height="90"></a>';
}

if (ad==3) {
txt='<a href="http://banner.casinolasvegas.com/cgi-bin/redir.cgi?id=N&member=24000000&profile=90046&lang=es" target="_blank"><img src="http://banners.affclub.com/images/marketing-materials/casinolasvegas/spanish/gif/728x90/euro/728x90_gif_2_clv_ge1.gif" alt="Gif Banners" border="0" width="728" height="90"></a>';
}



document.write(txt);

}