Magento Layered Navigation block. Move to center
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in `categoy.xml` i'm changing the reference name in:

        <reference name="left">
            <block type="catalog/layer_view" name="catalog.leftnav" before="-" template="catalog/layer/view.phtml"/>
        </reference>

to `content` which i assumed would place the layered nav into the center. Though it still stays on the left. infact even i change `left` to `right` it still doesn't move from the left sidebar. 

What am i doing wrong here?