Rubber Band / Focus Rectangle to select HTML content

[didijc]

What is the best way to implement a rubber band /focus rectangle on a web page?

In other words, I want to be able to navigate to a web page like people.com and use the rubber band / focus rectangle to some html content (images and/or text)...

...and I do realize I can simply highlight the content that I want but I am trying to do this via the rubber band / focus rectangle...