Intelligent Thumbnail Editing

I would like to be able to have more options when setting the thumb nail. Let me scroll into the website and choose which part of the site to view in the window. For instance: One thing I'd REALLY like to be able to do would be to set my weatherunderground tab to the radar page for my home town and then be able to zoom in the thumbnail so I can see it a little more clearly. Then, setting it to auto refresh every 15 minutes I'll have more or less up to date views of the weather in a simple clean box.

This will probably require you allow us to scroll both vertically and horizontally as well.