title: CSS parser using PHP
body: <p>Here's my css link for images:</p>
  
  <pre><code>background-image:url(images/background.gif);
  </code></pre>
  
  <p>I just want to add some: <code>../</code> to change the directory. So my code will look like this:</p>
  
  <pre><code>background-image:url(../images/background.gif);
  </code></pre>
  
  <p>How will I do that? I don't need a whole CSS parser just the code to add the <code>../</code> for the images...</p>