variables are empty when a script recalls itself ($PHP_SELF)

I have the following problem (maybe you know the sollution) I have a form wich the user can fill up to view certain records in a database. The query is like this $query_string = "SELECT ID, medianr, date, cat, subcat, titel, descr, nrmedia, video from movies where 1 and video like \"$video\" and titel like \"$titel\" LIMIT 0, $nr "; all those variables come straight from the form. The user can also decide how much records he/she wants to see so there's also a prev/next mechanism in the script. The prev/next links have a php_self link so the script calls itself again but then with a higher limit (offset) value. But the big problem is: all the values from ($titel, $nr, etc) the form are empty! Is there a way to keep those values when the script recalls himself? I hope you can help me with this! Thanks in advance, Sander Peters - The Netherlands