search in pagination problem

[eluser]mrcoder[/eluser]
Hi,

Iam new to CI.I have implemented pagination in my application.Now i wanna implement search for that page,I added a drowpdown with specialiaties.after clicking the search button it has to get the profiles with that speciality.upto this my application is working fine.when we click the page 2 link the iam not getting the sepciality value.i have send the hiddenvarible for sumit button.can any one help me.