[jQuery] url serialize or getUrlParam

[jQuery] url serialize or getUrlParam


Hello,
I want to get lastest url paramaters and add this paramater another
url like that:
http://blabla.com/action.php?q=1&page=1&rows=50&sidx=id
to
http://blabla.com/action.php?q=5&page=1&rows=50&sidx=id
I tried out getUrlParam but it doesn't work with jqgrid.
Thanks a lot.
King Regards,
Ibrahim
PS: You can see the code below:
http://dpaste.com/76882/