Thank you, Mardy, this is a very useful widget and is very easy to setup.

In the attached image you can see a problem: my text-based widget (taken from google results of "1 chf in eur") has black text on dark grey background and is hardly readable. The img widget instead (taken form foreca) is perfect.

Can I also suggest that image scaling is made with some other algorythm which preserves quality? You could use imagemagick as a dependency or use some other lib.
Thank you, again