Add features to PHP/Java Calculator - repost

Project Description: I need a tax calculator that was built using php and java script updated with several features. The updated features mostly include automatically selecting a tax bracket based on the gross. The calculator may need some basic updating to the actual coding structure in addition to the [login to view URL] tax information that needs to be added will be provided. A complete list of updates can be found below. Feature list: 1. Calculator off(turns the calculations completely off and make all fields editable) 1.5 Add marital status and allowances function 2. Tax bracket update( calculates correct fed & state tax based on gross and tax charts for married,single and allowances) [login to view URL] tax periods(ability to disconnect from the calendar and start fresh periods up to 24 new periods) [login to view URL] rounding ( correct the number rounding to consistently function) 5. Fix monthly function 6. Add simple calculation functions to beta version 7. Copy all changes to beta version