title: keyup on div for backspace not alerting keycode
body: <p>My code </p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /&gt;
  &lt;title&gt;Untitled Document&lt;/title&gt;
  &lt;script src="js/jquery.js"&gt;&lt;/script&gt;
  &lt;script&gt;
  $(function(){
   $("div").live("keyup",function(event){
   var code=(event.keyCode ? event.keyCode : event.which); 
   alert(code);return false;
   });
  
  });&lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
  &lt;div tabindex="0"&gt;We will be performing network maintenance today starting at 18:00 UTC - expect a brief scheduled outage&lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>It is alerting keycode for all buttons but on pressing backspace button the back button of browser comes in action.How can i prevent it?</p>