Have you tried jQuery SPServices api. There is a direct method given in the library. I used it.

http://spservices.codeplex.com/wikipage?title=$().SPServices.SPGetCurrentUser

Hope this helps you!

Also, I think you should load the web first and then you can get the current user.

Have you tried jQuery SPServices api. There is a direct method given in the library. I used it.

http://spservices.codeplex.com/wikipage?title=$().SPServices.SPGetCurrentUser

Hope this helps you!

Also, I think you should load the web first and then you can get the current user.