DsnCreator readonly dsnName input field

When trying to install contentbox there are a little bug probably caused by javascript that make dsnname inputfield readonly.

Test-case:

1) Start a fresh install
2) On contentbox-dsncreator check yes on question "Do you have a datasource created already?"
3) Insert a valid dsn that already exists
4) click verify button
5) the input field is readonly
6) what if I entered the wrong name? I cannot change name, a refresh of the page is required.

Probably not a great problem, however could be confusing. A verify again button or reload button should be available in my opinion.