WSH panel background repeat pattern

// image: 20x18 cross_bg.gif  http://www.traxsource.com/ background
// background example repeat pattern 05.Sept.2013

var image = gdi.Image(fb.FoobarPath + "images\\cross_bg.gif");

var ww = wh = 0;

function on_paint(gr) {

    if (image) {

        var w = image.Width;
        var h = image.Height;
        var horizontalCount = Math.ceil(ww / w);
        var verticalCount = Math.ceil(wh / h);

        for (var hi = 0; hi < horizontalCount; hi++) {
            for (var vi = 0; vi < verticalCount; vi++) {

                gr.DrawImage(image, hi * w, vi * h, w, h, 0, 0, w, h);

            }
        }
    }
}

function on_size() {

    ww = window.Width;
    wh = window.Height;

}