When I click on Support link in left menu, page loading with some listing items in the right panel. So, item with text "Billing" is always "active". It is because in <li> tags, you have <a> tags and when I'm choosing some other item, like "Policy", you remove class "active" from all <li> tags and adding to selected ("Policy" in our case).
In the end, we've got something like:
I think that it is wrong, because it caused a little confuse for me.
Anyway, i'm very impressed about your service, so I gonna give you max possible rate;)