title: How sets z-index to Ext.Panel (ExtJS)?
body: <p>I have problem with z-index (i think) in ExtJS.
  While drag and drop element  from GridPanel to DataView I drop element over GridPanel and it dropped to DataView. 
  But  DataView have place under the GridPanel, and this imposible!
  Thx!
  (problem in all browsers)</p>