SACRAMENTO, Calif. - A former California state parks employee says she told state attorneys that her department was hiding about $20 million in a special fund several months before officials announced discovering the surplus money, according to a sworn declaration filed in court Tuesday.The development is the latest revelation in a budget scandal that has state officials on the defensive and threatens to undermine Gov. Jerry Brown's push for a voter-approved tax increase.The court declaration from Cheryl Taylor, a former parks employee, raises further questions about what state officials knew, when they knew it, and what action, if any, they …