Get all Groups of CurrentUser in Client object Model (ECMAScript)

Hi,

I'm searching for a way to get all the Groups the CurrentUser belongs to.
I'm able to get the CurrentUser, but nog a fast and clean way to get his groups...
May I'm looking over something...

In the server object model we can use:  SPWeb.CurrentUser.Groups or SPGroup.ContainsCurrentUser

Tnx in advance!

Vandeput

• Check the SPWeb.CurrentUser.Groups collection, which contains all of the groups that the current user is a member of
• Check the SPGroup.ContainsCurrentUser property, for a specific SPGroup object