function init_dw_Scroll() {
    var wndo = new scrollObj('wn', 'lyr1');
    wndo.setUpScrollbar("dragBar", "track", "v", 1, 1);
    wndo.setUpScrollControls('scrollbar');
}

if ( scrollObj.isSupported() ) {
    Event.add( window, 'load', init_dw_Scroll);
}