Comments+ its possible to avoid forcing user to authorize FB log in when its already logged on FB?

Hey whats up, i see that the default code to post comments from Facebook (https://developers.facebook.com/docs/plugins/comments/) it doesn’t force users to authorize FB when they are already logged in… I attach a picture to show you what i mean.

Could i make the same thing? ( i mean, avoid the user to authorize fb so making easier to they to leave a comment)

Cheers and thanks very much.

Pictures:

http://i60.tinypic.com/2v023ar.jpg

http://i61.tinypic.com/15qx8xy.jpg