.shading-png {
    content: url("shading.png");
    height: 16px; width: 16px;
}
.hand-png {
    content: url("hand.png");
    height: 16px; width: 16px;
}
.zoomin-png {
    content : url("zoomin.png");
    height: 16px; width: 16px;
}
.zoomout-png {
    content : url("zoomout.png");
    height: 16px; width: 16px;
}
.info-png {
    content : url("info.png");
    height: 16px; width: 16px;
}
.select-png {
    content : url("select.png");
    height: 16px; width: 16px;
}
.unselect-png {
    content : url("unselect.png");
    height: 16px; width: 16px;
}
.world-png {
    content : url("world.png");
    height: 16px; width: 16px;
}
.next-png {
    content : url("next.png");
    height: 16px; width: 16px;
}
.back-png {
    content : url("back.png");
    height: 16px; width: 16px;
}
.pencil-png {
    content : url("pencil.png");
    height: 16px; width: 16px;
}
.map-png {
    content : url("map.png");
    height: 16px; width: 16px;
}
.ruler-png {
    content : url("ruler.png");
    height: 16px; width: 16px;
}
.printer-png {
    content : url("printer.png");
    height: 16px; width: 16px;
}
.tools-png {
    content : url("tools.png");
    height: 16px; width: 16px;
}
.paint-png {
    content : url("paint.png");
    height: 16px; width: 16px;
}
.form-png {
    content : url("form.png");
    height: 16px; width: 16px;
}
.basemap-png {
    content: url("basemap.png");
    height: 16px;
    width: 16px;
}
.legend-png {
    content: url("legend.png");
    height: 16px;
    width: 16px;
}