Adding $zebra to filter section

This is the first time I submit my own modification, so I'm not sure this is the right place to do it.

I've added $zebra variable to taxonomy-filter-section.tpl.php to allow more theming to the filter section. In my case I've included the filter section in the content area, at the bottom. With $zebra variable (class="odd" or class="even") I can make the filters 50% width and float them to the left or to the right.

Live demo here: http://pixelgordo.com/categoria/vista/lateral

I attach the modified file. Since it's really small I haven't create a patch.