Tablesorter and links

Tablesorter and links

Hi, I am trying to use Tablesorter with clickable rows. I wrote a widget for this. I've got a problem with it. If I don't sort columns everything is good. But if I sort once, the widget call twice the new page and so on... I solved it using the "_new" target value. But now I want to use the thickbox plugin and the problem come back. How can I solve this multi click event ?

Here's my code for the widget
     
  1.     $.tablesorter.addWidget ({
  2.   id: "click", format: function(table){
  3.             $('tr',$(table)).bind("click",function (){
  4.                   window.open("pdf/boform.php?num_ses=" + $(this).attr("link"),"_new"); 
  5.             }); 
  6.       }
  7. });