function wndpop(location, width, height, scrolls) {

    day = new Date();
    id  = day.getTime();

    left = (screen.width - width) / 2;
    thetop  = (screen.height - height) / 2;

    eval("page" + id + " = window.open(location, '" + id + "', 'toolbar=0,scrollbars=" + scrolls + ",location=0,statusbar=0,menubar=0,resizable=0,width=' + width + ',height=' + height + ',left = ' + left + ',top = ' + thetop);");
}

function wndpop_help(location)
{
    wndpop(location, 550, 350, 1);
}