#top_menu ul li {
    position: relative;
     /*-pie-background: url("img/ie_menu.png");*/
     -pie-background: linear-gradient(to top, #a4671f, #834c0b 14%, #77470b 25%, #b0782b 55%, #e9c087);
     -pie-border-bottom: 1px solid #845b1f;
     behavior: url(pie/PIE.htc);
}