Masked Input Plugin - allows a user to more easily enter fixed input data in a certain format

Masked Input Plugin is a masked input plugin for the jQuery javascript library. 
It allows a user to more easily enter fixed width input where you would like them to enter the data in a certain format (dates, phone numbers, etc). 

A mask is defined by a format made up of mask literals and mask definitions. Any character not in the definitions list below is considered a mask literal. Mask literals will be automatically entered for the user as they type and will not be able to be removed by the user.