var banner;
$(document).ready(function () {
    banner = $(".banner");
    changeBanner(0);
});

function changeBanner(index) {    
    banner.hide();
    banner.eq(index).show();
    var timeout = parseInt(banner.eq(index).children("span").html()) * 1000;
    //alert(timeout)
    var size = banner.size();
    index++;
    if (size == index)
        index = 0;

    setTimeout("changeBanner(" + index + ")", timeout);
}