Master page with keyword search recordset nav issue

I put together a master and detail page which work fine. I added a keyword
search function to the master page, and that filters the recordset fine. The
recordset is filtered by the keyword and the master page then displays X
records per page. The problem is that the recordset navigation doesn't work
properly. For example,, if 15 records are returned, and I am displaying 5
records per page, the 'next' button will return a blank page (displaying only
my conditional text for a empty recordset). Obviously I am losing my filter
parameter some how. I set up the filter in the recordset sql statement as
WHERE Category = 'MMColParam' and defiined the MMColParam as
Request.QueryString('Category'). I am not quite sure what I am doing wrong.
Any help appreciated. I swear this was working previously. Thanks.

I think this should be in applications, so I am going to post it there. Sorry for the cross post.

Problem solved. Changed Request.Form to Request.QueryString and form method
changed from Post to Get.