Added final textbox exception handling.
Tab grey-out logic added, next step is adding a finalize popup window so that information can be corrected before being written to database.
Adding finalize windows to enable editable contracts.
Plinking away to get it to work
Merge pull request #14 from alxnek/master

Updating my master
Merge pull request #18 from motherdear/master

thx
dev alxnek