function iA() {
this.length = iA.arguments.length;
  for (var i = 0; i < this.length; i++) {
  this[i] = iA.arguments[i];
  }
}

link = new iA(
"http://espana.intercasino.com/index.html?1345713|01389",
"http://www.es.jackpotcity.com/index_indice.asp?s=aff81005&b=jsp_468x060_003",
"http://www.crazyvegascasino.com/es.index.asp?btag=AfBtag370101001"
);

image = new iA(
"http://ads.intercasino.com/partnerlogic/banners/01389.gif",
"http://www.ClickedyClick.com/ads/jps/jsp_468x060_003.gif",
"http://www.affiliatebannerfarm.com/vegaspartner/es_banners/crazyvegas/468x60/468x60_1.gif"
);

var curd = new Date();
var rnd = curd.getSeconds() % image.length;
var Href = link[rnd];
var Src = image[rnd];

document.write('<a href=\"' +Href+ '\" target=\"_blank\"><img border="0" src=\"'+Src+'\" width="468" height="60"></a>');