for (int i = 0; i < box_extents.length; i++) {
Bounds bounds = Bounds.fromArray(new ArrayList(box_extents[i]));
org.zkoss.openlayers.feature.Vector box = new org.zkoss.openlayers.feature.Vector(
bounds.toGeometry());
boxes.addFeature(box);
}
map.addLayers(Arrays.asList(ol_wms, boxes));
map.addControl(new LayerSwitcher());
Control sf = new SelectFeature(boxes);