title: get selected text's html in div
body: <p>i have a div with contentEditable set to true.
  I have to find selected text html.I am able to get selected text in FireFox by</p>
  
  <pre><code> window.getSelection();
  </code></pre>
  
  <p>I case of IE i am able to get selected text html by using</p>
  
  <pre><code>document.selection.createRange().
  </code></pre>
  
  <p>But, how can i find selected text html in FireFox.
  How can in do this.Please help.</p>