var JSLoader = {
  Version: '1.0',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write("\n"+'<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },

  load: function() {
    var js = /js_loader\.js(\?.*)?$/;
    $$('head script[src]').findAll(function(s) {
      return s.src.match(js);
    }).each(function(s) {
      var path = s.src.replace(js, ''),
      includes = s.src.match(/\?.*load=([a-z,]*)/);
      ('scriptaculous/scriptaculous,lightbox/lightbox,lightview/lightview,prototip/prototip,swfobject/swfobject,supersleight/supersleight,horinaja/horinaja,menu/menu').split(',').each(
       function(include) { JSLoader.require(path+include+'.js');});
    });
  }
};

JSLoader.load();