APEX

What may seem very simply is turning out to be VERY difficult!!

I have a simply Master/Detail APEX created form with a standard 'Add Row' button on the detail that calls javascript:addRow(); and created blank records of which I can then populate and save to the database table after applying (submitting) the change.

Here is my question:

In the MASTER BLOCK I have a shuttle list and when I select items on/to this list I want to be able to pass the values along with some other defaulted values to the addRow() and populate the detail lines in the DETAIL BLOCK without submitting the page.

I am an experienced programmer but have limited JAVA/AJAX experience so please keep the technical Java and Ajax talk to a minimum.

I DO NOT want to create or introduce collections to this solution AND I want the std. Default APEX created DML to still be intact.

I believe this to be a challenge in APEX verison 4.1.0.00.32 ... please show me that it is NOT ...

ThX. in Advance