Show a user's group membership

[photongbic]

This works great if you are checking for a primary usergroup but how do you check if they have an additional membership to a custom group?

For example, the user is in the "Registered Users" group (id=2) and the "Furry Friends" group (id=10). "Registered Users is their primary group. I wish to show that they are in both groups. How do I do that?

In the above example, the code would be changed from...

This works for primary group

<if condition="$post['usergroupid']==10"><div class="smallfont"><b>Furry Friends</b></div></if>

to...
This works for all groups

<if condition="is_member_of($post,10)"><div class="smallfont"><b>Furry Friends</b></div></if>

Have fun!