+<span id=column_selection>
<a id="all" href="#">all</a>
<a id="toggle" href="#">toggle</a>
<a id="none" href="#">none</a>
<a id="included" href="#" style="display:none">included</a>
<a id="excluded" href="#" style="display:none">excluded</a>
</label>
+</span>
<script type="text/javascript">