title: jQuery .css() append or overwrite
body: <p>When appending the .css() function in jQuery 1.4.4 will the .css() override each of the preceding css, or will it append it?</p>
  
  <p>e.g.</p>
  
  <pre><code>$('.GhostIcon').css('opacity', '0.25').css('filter', 'alpha(opacity=25)').css('-khtml-opacity', '0.25').css('-moz-opacity', '0.25');
  </code></pre>
  
  <p>And secondly, does this have the same behaviour?</p>
  
  <pre><code>$('.GhostIcon').css('opacity', '0.25');
  $('.GhostIcon').css('filter', 'alpha(opacity=25)');
  $('.GhostIcon').css('-khtml-opacity', '0.25');
  $('.GhostIcon').css('-moz-opacity', '0.25');
  </code></pre>