I thought its better to create an own page dedicated to the ajaxed Library. It is easier to follow the current changes, bugs, feature requests, etc. The page can be found in the menu on the right or just here. Because I got some nice feedback I will come up with more tutorial within the next weeks. Promise 
There does not appear to be too many working example scripts shown on the site - where can I find more examples?
For example an input field that does a lookup on a SQL-Server table to provide a drop down selection; including some detail on how the database connection and interaction works.