function init_dw_Scroll() {
    var wndo = new dw_scrollObj('wn', 'lyr1');
    wndo.setUpScrollbar("dragBar", "track", "v", 1, 1);
    wndo.setUpScrollControls('scrollbar', true, 'v');
}
// if necessary objects exists link in the style sheet and call the init function onload
if ( document.getElementById && document.getElementsByTagName ) {
    dw_writeStyleSheet('/css/scrollbar.css')
    addLoadEvent(init_dw_Scroll);
}