title: JQuery IE <div> opacity problem
body: <p>I have a problem with IE.
  I have a layer that has this style to make it transparent and fullscreen.</p>
  
  <pre><code>position:absolute;
  top: 0px;
  left: 0px;
  right: 0px;
  bottom: 0px;
  background-color: #000000;
  filter:alpha(opacity=50); 
  -moz-opacity: 0.5; 
  opacity: 0.5;
  z-index: 1;
  </code></pre>
  
  <p>And i use the JQuery method fadeIn and fadeOut to show and hide it.
  Well all well in Opera locks great but IE7 Just overides the style and sets it to 100% opacity. it dosent even fade!!</p>