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