Dragging a draggable outside it's parent

Dragging a draggable outside it's parent

Hi, I'm having some difficulty making draggable divs be visible outside of their parent. Basically I have a search div that contains all the dragable divs, and I want to be able to drag any of those outside of the search div into different dropable containers, but once I reach the edge of the parent (search) div, I can no longer see them. Any ideas? None of the demos I've found show dragging outside of a parent. I've tried the following without success:
   $(document).ready(function() {
      $(".block").draggable({helper:'clone', ghosting: true,revert: true, fx: 100, zIndex: 999, containment:'document', insideParent:false});        
   });
Example html:
<div><div id="mydrop1"></div><div id="mydrop2"><div id="mysearchdiv"><div id="blocks"><div class="block">Block 1</div><div class="block">Block 2</div></div></div></div>