/* MouseEnterLeave.js v1.0.0 by Ken Snyder: http://kendsnyder.com/sandbox/enterleave/ */
(function() {
  var events = Prototype.Browser.IE ? 
    {"bindAsMouseEnter":"fromElement", "bindAsMouseLeave":"toElement"} :
    {"bindAsMouseEnter":"relatedTarget", "bindAsMouseLeave":"relatedTarget"};
  for (var eventName in events) {
    (function(relTargetProperty) {
      Function.prototype[eventName] = function() {
        var __method = this, args = $A(arguments), object = args.shift();
        return function(event) {
          event = event || window.event;
          try { 
            var relatedTarget = $(event[relTargetProperty]);
            if (relatedTarget && relatedTarget != this && !relatedTarget.descendantOf(this)) {
              __method.apply(object, [Event.extend(event)].concat(args));
            }
          } catch(e) {}
        };
      };
    })(events[eventName]);
  }
})();