<script type="text/javascript">
function senden(...){
getElementById(x1).value= ...
...submit();
}
</script>
...
<input type="hidden" id="x1" name="x1" value="" />
<a href="javascript:senden('wert1')">Abschicken</a>
<a href="javascript:senden('wert2')">anders Abschicken</a>