[Moo] Error in Tips (onDetach) ??

[hamburger]

Hello in my code the function
Hints.detach(li_element);
destroys the detached element (here:li_element) not the Hints.

is this the way of meaning?

How to destroy the showed Tip-element?

my code:
        var li_element = new Element('li', {
                                        'id': bildID,
                        'class': 'complain',
                                        'html': complaintext + '<br /><span 
class="time">I do not
want this ...</span>'
                                        }).adopt(
                                        new Element('img', {
                                                'class': 'complain-remove',
                                                    src: 
'images/investor_close.gif',
                                                title: 'click to remove.',
                                                events: {
                                                        click: function() {
 
Hints.detach(li_element);                                  //Tip
delete
                                        li_element.dispose();
                                                        }
                                                }
                                        })
                            ).inject('complainContainer','top');


and for tips:

var Hints = new Tips({
   showDelay: 100,
   hideDelay: 10,
   offset: {
        'x': -60,
        'y': -130
    },
   fixed: true,
   className: 'david_tip',
   onShow: function(tip,el) {
       tip.fade('in');
   },
   onHide: function(tip,el) {
    tip.fade('out');
   },
   onDetach:function(tip,el) {
     alert("detached");
     //tip.fade('out'); //something wrong here
     //tip.setStyle('display', 'none');
   }
  });