var myWind

function doNew(WindowName) {
        if (!myWind || myWind.closed) {
                myWind = open(WindowName, "remote", "resizable,status,scrollbars,width=700,height=500,left=100,top=90");
                myWind.focus();
        } else {
                // bring existing subwindow to the front
                myWind.close;
                myWind = open(WindowName, "remote", "resizable,status,scrollbars,width=700,height=500,left=100,top=90");
                myWind.focus();
        }
}