Try Usersnap on our favourite Javascript-Library:
The famous ExtJS Examples!

Here's Usersnap in German, Spanish, French or Polish!

Tired of endless email-loops concerning layout issues? Looking up the one typo takes 10 minutes of your time?

Get visual feedback directly from your users. Just add usersnap to your page and your users can send you annotated screenshots of your page without installing any plugins. You will get the screenshot directly via email.