Comment 1 for bug 454997

Solution:

put the CSS tag before the Scripts tags, like this:

  <link rel="stylesheet" type="text/css" href="style.css" />
  <title>Yout title</title>
  <script type="text/javascript" src="typeface-0.13.js"></script>
  <script type="text/javascript" src="helvetiker_regular.typeface.js"></script>