how can i embed a web page with some javascript functionality in a form?

I have a requirement on my hands to embed an html form inside a form with some javascript functionality. I’ve looked around the internet and can’t seem to lay my hands on some good resource.

You can build an extensible control. I have a simple example on my blog; it should give an idea. Then you can learn more details from documentation.

link is broken…

Sorry! It should work now.