Displays a visual warning at the top of a page when a user has 'Compatibility View' mode enabled in Internet Explorer.
Only 1.1kb minified and gzipped!
Just include the minified script on your page, and that's it!
See okize.github.io/compatibilityViewWarning for an example page, but basically it looks like this:
No dependencies, not even jQuery!
MIT license. See the license file for details.