Try using hidden input fields

<form name = "employee" method = "post" action = "output.cgi">
<input type="hidden" name="team_id" value="[% team_id %]"/>
<input type="hidden" name="fromdate" value="[% fromdate %]"/>
<input type="hidden" name="todate" value="[% todate %]"/>
..
[download]

poj