title: Bootstrap form won't submit with image button
body: <p>I have made a form with Bootstrap. There is a image button to submit the form but when I click it, nothing happens. </p>
  
  <pre><code>&lt;form name="input" action="index.php" method="post" class="form-horizontal"&gt;                    
      &lt;div class="input-group"&gt;
          &lt;span class="input-group-addon"&gt;@&lt;/span&gt;
          &lt;input name="coins" type="text" class="form-control" placeholder="Quanity" &gt;
      &lt;/div&gt;&lt;br&gt;
      &lt;div class="input-group"&gt;
          &lt;span class="input-group-addon"&gt;@&lt;/span&gt;
          &lt;input type="text" class="form-control" name="usd" placeholder="USD" &gt;
      &lt;/div&gt;&lt;br&gt;
      &lt;div class="input-group"&gt;
          &lt;span class="input-group-addon"&gt;@&lt;/span&gt;
          &lt;input  type="text" class="form-control" name="paypal" placeholder="PayPal Address" &gt;
      &lt;/div&gt;&lt;br&gt;
      &lt;div class="input-group"&gt;
          &lt;input type="image" src="/img/ppbutton.png" name="submit" alt="PayPal - The safer, easier way to pay online!"&gt;
      &lt;/div&gt;&lt;br&gt;
  &lt;/form&gt; 
  </code></pre>