APEX

I have been searching the APEX forum to find threads related to being able to copy a row in a tabluar form. In other words, I want to be able to take the last row entered in a tabular form, then click a button to copy that row's information to a new row. And as a bonus, I'd like to be able to enter a number to be able to create x number of new rows that are a copy of the last row entereed. But first, I'd like to just be able to copy the last row entered on a tabular form. I found this example, which is close to how I would like to do it:

http://apex.oracle.com/pls/otn/f?p=24317:49:2807584871277729:::::

Does anyone know how the code behind this example and where that code would be placed in a region/page?

Thanks,
John