<form method=post>
<table><tr><td><input type=hidden name='blabla' value='blabla'><input type=hidden name='blabla1' value='get'><input type=hidden name='blabla2' value='blabla3'><input type='text' name='blabla4' value='A'></td><td><input type=submit value='OK></tr></table></form>