// Put all your code in your document ready area
jQuery(document).ready(function($){

	// show invisible elements styled with class="javascript"
	$('.javascript').removeClass('javascript');
   
  // Open a new window without using target="_blank" for XHTML
  $('a[rel=external]').attr('target','_blank');
  
  $('a.titel').popupWindow({ 
    height:600, 
    width:800, 
    centerBrowser:1 
  }); 
});