Problem with Postback

Problem with Postback

Hi!
I have this script:

  1. $(document).ready(function getFocus(){
  2. $("input.GarClaCheckBox").click(function() {
  3. var idchek = $(this).attr("id");
  4. idParam = $("td.GarClaParam2 > input").attr("id");
  5. if(idchek!=null)
  6. {
  7. var chr = idchek.charAt(3);
  8. var chr1 = idchek.charAt(4);
  9. idParam = idParam.substring(0, 3) + chr + idParam.substring(3+1);
  10. idParam = idParam.substring(0, 4) + chr1 + idParam.substring(4+1);
  11. $("td.GarClaParam2 > input[id =" + idParam + "]").focus();
  12. }
  13. //$("td.GarClaParam2 > input[id =" + idParam + "]").focus();
  14. });
  15. });
  16. $(function(){
  17. getFocus();
  18. });
  19. Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function(){
  20. getFocus();
  21. });
Why don't start after the postback?
Thanks..!