var loadExternalJavascript = {
  require: function(jsName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+jsName+'"></script>');
  },
  load: function() {
    $A(document.getElementsByTagName("script")).findAll( function(s) {
      return (s.src && s.src.match(/settings\.js(\?.*)?$/))
    }).each( function(s) {
      var path = s.src.replace(/settings\.js(\?.*)?$/,'');
      var includes = s.src.match(/\?.*load=([a-z,]*)/);
      (includes ? includes[1] : '').split(',').each(
       function(include) { loadExternalJavascript.require(path+include+'.js') });
    });
  }
}

loadExternalJavascript.load();