<form name="myForm" method="post" action=""><input type="text"><input type="button" name="b1" value="b1" onclick="submitform(b1)"><input type="button" name="b2" value="b2" onclick="submitform(b2)"></form><script>...<!--function submitform(target)...{ window.document.myForm.action = target ; myForm.submit();}//--></script>