Federline determined to be the perfect dad

Kevin Federline has vowed not to let Britney Spears' erratic behaviour affect the welfare of their two young sons - by becoming the perfect father.

Troubled Spears lost her visitation rights to Sean Preston, two, and Jayden James, one, following an apparent breakdown at her home on January 3, after she refused to hand her youngest son back to her ex-husband's minder at the end of a visitation term.