function expandingMenu(num) {
     var speed = 200;
     
     var item_title = $("#menu ul").eq(num).children(":first");
     var items = $("#menu ul").eq(num).children().filter(function (index) { return index > 0; });
 /* hide items if not active */
     if (items.is(".active") == false) {
         items.hide();
     }
 /* add click functions + pointer to title */
     item_title.css({cursor:"pointer"}).toggle(
         function () {
             items.fadeIn(speed);
         }, function () {
             items.fadeOut(speed);
         }
     )
 }