More then one Submit Button in Form

The following form having two submit button with two different form action




<form name="main_form" action="main.php" method="get">
<input name="one" value="text box value.">
<input type="submit" name="submit" value="first_submit" onClick="document.main_form.action='first_action.php';">
<input type="submit" name="submit" value="second_submit" onClick="document.main_form.action='second_action.php';">
<input type="submit" name="submit" value="main_submit">
</form