title: Setting dataTransfer.dropEffect has no effect on IE9
body: <p>Setting the <em>dataTransfer.dropEffect</em> in <em>dragEnter</em> and <em>dragOver</em> handlers does not seem to work in <strong>Internet Explorer 9</strong>.
  Whatever the value, the cursor seems determined only by the <em>dataTransfer.effectAllowed</em> value set during <em>dragStart</em>.</p>
  
  <p>In the example below, you will get a "copy" cursor (arrow with plus) by selecting and dragging "DRAG ME" both over "MOVE" or "COPY" in IE9.</p>
  
  <p><a href="http://jsfiddle.net/aHDWL/">http://jsfiddle.net/aHDWL/</a>
  <p></p>
  
  <pre><code>function fnDragOnDefault()
  {
    var oEvent = window.event;
    oEvent.returnValue = false;
  
    var oData = window.event.dataTransfer;
    oData.dropEffect = "move";
  }
  </code></pre>
  
  <p>If you switch back to <strong>IE8 Document mode</strong> (you can use F12 for that), then the <strong>dropEffect setting will work</strong> and the cursor will be different on the two boxes.</p>
  
  <p>Is there any fix/workaround ?</p>
  
  <p>Thanks !</p>