var menu_size = 10;
function setActiveMenu(p){
   for (var i = 0;i < menu_size;i++){
      var menu = document.getElementById("menu" + i);
      if (menu == null) return;
      if (i == p){
         if (navigator.appName.toUpperCase().indexOf("MICROSOFT") >= 0){
            menu.setAttribute("className","menu_td_active");
         }else{
            menu.setAttribute("class","menu_td_active");
         }
      }else{
         if (navigator.appName.toUpperCase().indexOf("MICROSOFT") >= 0){
            menu.setAttribute("className","menu_td");
         }else{
            menu.setAttribute("class","menu_td");
         }
      }
   }
}