var Scriptaculous = 
{
  Version: '1.5.1',

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

  load: function() 
  {
    if((typeof Prototype=='undefined') || parseFloat(Prototype.Version.split(".")[0] + "." + Prototype.Version.split(".")[1]) < 1.4)
      throw("script.aculo.us requires the Prototype JavaScript framework >= 1.4.0");
    
    $A(document.getElementsByTagName("script")).findAll
    ( 
      function (s)
      {
        return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
      }
    ).each
    ( 
      function (s) 
      {
        var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
        var includes = s.src.match(/\?.*load=([a-z,]*)/);
        (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider').split(',').each
        (
          function (include) 
          {
            Scriptaculous.require(path+include+'.js') 
          }
        );
      }
    );
  }
}

Scriptaculous.load();