function BannerImage() {
      this.src = null;
      this.alt = null;
      this.href = null;
      this.quantity = null;
    }
    function rotateBanner(banner, realtime) {
      var current = 0;
      if (eval(banner+"_length") > 1) {
        current = eval(banner+"_old");
        while (current == eval(banner+"_old")) {
          current = Math.floor(Math.random()*eval(banner+"_length"));
        }
        eval(banner+"_old = current");
      }
      if (eval(banner+"_length") > 0) {
        document.getElementById(banner+"_img").src = eval(banner+"_banner[current].src");
        document.getElementById(banner+"_img").alt = eval(banner+"_banner[current].alt");
        document.getElementById(banner+"_a").href = eval(banner+"_banner[current].href");
        if (realtime) {
          var quantity = eval(banner+"_banner[current].quantity");
          if (quantity == '') quantity = 5;
          setTimeout('rotateBanner("'+banner+'", "'+realtime+'")', 1000*quantity);
        }
        
      }
    }