title: Android ImageButton without Padding
body: <p>Currently my imageButtons display an image with a very undesirable padding around them. How do I get rid of the padding and just have the image as the button.</p>
  
  <pre><code>&lt;ImageButton android:src="@drawable/defaultbutton" 
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"/&gt;
  &lt;ImageButton android:src="@drawable/defaultbutton2" 
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      /&gt;            
  </code></pre>
  
  <p>Secondly, How do I add links to these imagebuttons to open in the browser <code>onClick</code></p>