enhancer/jersey/src/main/resources/META-INF/resources/static/enhancer/openlayers-2.9/theme/default/ie6-style.css

.olControlZoomPanel div {
    background-image: url(img/zoom-panel-NOALPHA.png);
}
.olControlPanPanel div {
    background-image: url(img/pan-panel-NOALPHA.png);
}