Britney Spears' Lawyer Rails on Jamie, Calls Him 'Alcoholic and Gambling Addict'

Britney Spears' lawyer has taken off the gloves in his war with Jamie Spears, calling him a "reported alcoholic and gambling addict," and that's just for starters.

Attorney Mathew Rosengart has gone on the attack, after Jamie filed legal docs challenging the person Rosengart has tapped to replace Jamie temporarily as conservator of Britney's estate.

TMZ broke the story, Jamie claimed CPA John Zabel is unqualified to assume that position, but Rosengart's new legal docs refer to Zabel as a "highly-esteemed, nationally-recognized, award-winning CPA with an impeccable record of serving in positions of trust."

Rosengart finds it rich that Jamie is blasting Zabel, saying Jamie has "zero financial background or experience in financial matters, who previously filed for bankruptcy and has a Domestic Violence Restraining Order currently in effect against him."

Rosengart's legal docs challenge Jamie's request for fees for himself and Jamie's lawyers. He calls Jamie incompetent and rails on what he says is "abuse of his daughter (which evidently goes back to her childhood), and the dissipation of Estate assets."