How to generate Divs containing tables with dynamically addable and removable rows? - JSfiddle Added

I believe I have properly understood your requirement.
Try out this fiddle http://jsfiddle.net/Kucuk/14/

It uses jquery though - its just a sample sort of thing that you could probably base your own code off. Its all doable in plain old JavaScript, if that's what you prefer. The styling is a bit off, but that you can handle I hope.

Do let me know if this helps you in some manner.