title: CakePHP Facebook plugin: custom login button image
body: <p>I am trying to replace the default image with a custom one, but with no success. I have tried applying some CSS classes that put my image over Facebook's, but it gives me an error: <code>truncated image</code>. </p>
  
  <p>How can I replace the custom login button? I would appreciate if you can give me a 'caky' solution, as I use CakePHP Facebook Plugin for this. Thanks!</p>