title: one form, two submit buttons for two different hidden values
body: <p>I have a basic post form that submits some data to an SMS gateway. 
  One of the hidden fields "message" is the text of the message that i wish to be sent out.
  I need two submit buttons for two different sitations (case1 and case2) - each one transmits a different text in the "message" value. 
  I cant do anything server side as the data is sent to a third party gateway.
  Any advice?</p>
  
  <p>current code is:</p>
  
  <p>I just need two submit buttons - one for case1 and one for case2.</p>
  
  <pre><code>&lt;form action="https://gatway.com/send.php" method="post"&gt;
  &lt;input name="key" type="hidden" value="APIKEYxxxxx" /&gt;
  &lt;input name="message" type="hidden" value="message to send in case 1" /&gt;
  &lt;input name="message" type="hidden" value="message to send in case 2" /&gt;
  To: &lt;input name="to" type="text" /&gt;
  &lt;input name="username" type="hidden" value="username" /&gt;
  &lt;input name="from" type="hidden" value="+44xxxxxxxxxx" /&gt;
  
  &lt;input type="submit" value="Submit" /&gt;&lt;/form&gt;
  </code></pre>