while(true){
aleatorio = Math.random();
numero = Math.round(aleatorio * 8);

if (numero == 0){
imagen = "http://img69.imageshack.us/img69/7276/66749016.png";
break;}

if (numero == 1){
imagen = "http://img10.imageshack.us/img10/1589/91970180.png";
break;}

if (numero == 2){
imagen = "http://img401.imageshack.us/img401/2148/38234636.png";
break;}

if (numero == 3){
imagen = "http://img97.imageshack.us/img97/61/76788828.png";
break;}

if (numero == 4){
imagen = "http://img33.imageshack.us/img33/9054/32675961.png";
break;}




}
document.write('<a href="http://madonnamia.foroactivo.net/" target="_self" ><img src="' + imagen + '" border=0 style="width: 800px; height: 211px"></a>');