Sencha Touch Scrolling a Non Touch Blackberry

app.ux.my_panel = Ext.extend( Ext.Panel, {
    initComponent   :   function() {

        app.ux.my_panel.superclass.initComponent.call(this, arguments);

        //Setup the scroller for BlackBerry
        var scrollList = this;
        this.on('mousemove', function(evt, div, el) {
            if (scrollList.scroller.offsetBoundary.top === 0) {
                scrollList.scroller.updateBoundary();
            }
            var maxOffset = scrollList.scroller.offsetBoundary[1] - 400;
            var bottom = scrollList.getHeight() - 15;
            //if (evt.xy[1] > 300 && scrollList.scroller.offset.y >= maxOffset) {
            if (evt.xy[1] > bottom && scrollList.scroller.offset.y >= maxOffset) {
                var offset = -1 * scrollList.scroller.offset.y + 10;
                scrollList.scroller.scrollTo({
                    x: 0,
                    y: offset
                });
            } else if (evt.xy[1] < 60 && scrollList.scroller.offset.y <= 0) {
                scrollList.scroller.scrollTo({
                    x: 0,
                    y: (-1 * scrollList.scroller.offset.y) - 10
                });
            }
        }, null, {element:'el'} );

    }
}