urla="http://www.searchboston.com/";
var ad_cnta = 5;
var nowa = new Date()
var seca = nowa.getSeconds()
var ada = seca % ad_cnta;
ada +=1;
if (ada==1) {
bannera="
";
}
if (ada==2) {
bannera="
";
}
if (ada==3) {
bannera="
";
}
if (ada==4) {
bannera="
";
}
if (ada==5) {
bannera="
";
}
document.write('');
document.write(bannera + '');
document.write('');