function carregarNovoBanner() {
 var posBanner = ((vetBanners.length-1)<=0) ? 0 : posBanner= random(0,(vetBanners.length-1)); //Busca um banner aleatório

 if ((vetBanners[posBanner].uri == '') || (vetBanners[posBanner].uri == '#')) {
  document.getElementById("idBanner").innerHTML= '<img border="0" src="'+vetBanners[posBanner].img+'">';
 } else {
  document.getElementById("idBanner").innerHTML= '<a target="'+vetBanners[posBanner].target+'" href="'+vetBanners[posBanner].uri+'" style="border:none;"><img border="0" src="'+vetBanners[posBanner].img+'"></a>';
 }

 posBanner++;
 if (posBanner >= vetBanners.length) posBanner= posBanner - (vetBanners.length);
}
 var intervalo = window.setInterval('carregarNovoBanner()', tempoTrocaBannersEmSegundos*1000); 

 //clearInterval(intervalo);