jqery not getting called after ajax refresh

[tubin gen]

I   added this jquery code   to my page.

    $(document).ready(function(){
     $("a.showHidePrograms").click(
     function () {
       var $div= $(this).parent().next("div");
       if($div.attr("class") == 'hide'){
            $div.attr("class","show");
       }else{
          $div.attr("class","hide");
       }
     }
     );
    });

 inside my html I have a table this contains  anchor tag with
class showHidePrograms.
  onclick of this anchor tag the function gets called everything is fine.

This page also has some ajaxLinks on click of this link  I repaint the
table, after this    when I click on anchor tag the jquery script is not
called ,
does repainting somehow hides this anchor from jquery ?