Having problem with codylindley DOMWindow and jquery UI Slider on IE:

Having problem with codylindley DOMWindow and jquery UI Slider on IE:

I'm using the Cody Lindley DOMWindow script, modeless, draggable for a popup form that has a jquery UI slider. All is working well except with IE - the problem is when I slide the handle the window drags. If I position the cursor slightly to the left or right of the slider handle, it slides fine. 

Any help would be appreciated.

My slide event is as follow:
  2.        slide: function(e, ui){
  3.             if(e.target==this)
  4.             {
  5.                 $j('input:text[name=rate]').val(ui.value+'%');
  6.                 rss.updateCalc(1);
  7.                 e.stopPropagation();
  8.             }
  9.       }