title: :contains issue on IE8
body: <p>It seems that <code>jQuery :contains</code> selector does not work on IE8.</p>
  
  <p>Please see following example on IE - <strong><a href="http://jsfiddle.net/MrTest/p3W4x/23/" rel="nofollow">LIVE DEMO</a></strong></p>
  
  <p>JS:</p>
  
  <pre><code>$('table tr td:contains(" + ")').each( function(){
          $(this).addClass('url');
  });
  </code></pre>