Trim Blogger popular post snippets

<script type='text/javascript'>
//<![CDATA[
// Trim popular post snippets right using jQuery / MS-potilas 2012
// Put this code in a html/javascript gadget (after popular posts gadget), or before </body>.
// See http://yabtb.blogspot.com/2012/01/trim-blogger-popular-post-snippets.html
$('.popular-posts ul li .item-snippet').each(function(){
  var txt=$(this).text();
  var j=txt.lastIndexOf(' ');
  if(j>42)
     $(this).text(txt.substr(0,j).replace(/[?,!\.-:;]*$/,'...'));
});
//]]>
</script>