Creating Single Function Buttons

Here is the complete code for two buttons:

<form method="post"

action="/cgi-bin/mmoxcey/oratut/report2.pl">

<input type="hidden" name="call_type" value="open">

<input type=submit value="Show Open Calls">

</form>

<form method="post"

action="/cgi-bin/mmoxcey/oratut/report2.pl">

<input type="hidden" name="call_type" value="closed">

<input type=submit value="Show Closed Calls">

</form>