title: How to tell in jQuery if an element's background is transparent?
body: <p>If 'element' has a transparent background </p>
  
  <pre><code>$('element').css('background-color') 
  </code></pre>
  
  <p>returns 'transparent' in some browsers and 'rgba(0, 0, 0, 0)' in others.</p>
  
  <p>I would have expected jQuery to have  cross-browser way of telling us if an element has a transparent background. </p>
  
  <p>Am I missing something?</p>
  
  <p>Thanks</p>