I am developing a kiosk and currently using the JQuery Keypad plugin. I need to have a layout in where I can put a custom button inside the kaypad and toggle between alphabetic and numeric keys.  Basically, the behavior is like the iphone keypad. 

http://www.techgadgets.in/mobile-phones/2007/18/iphones-touchscreen-keypad-is-slower-says-user-centric/

Is this something that is doable in Jquery keypad plugin?

Thanks!