Date.js and Dynamics CRM 2011

In a word: NO.

I recently added the JavaScript date library Date.js to an installation to get some date calculation functionality.

It worked great but totally broke the CRM date controls.

After much troubleshooting and some helpful advice from my friend Tanguy, I realized Date.js was incompatible with CRM and I had to remove it as a web resource in order to return CRM's native date control functionality.