Scripts and the December 2011 Update

I’ve heard a few stories in the wild about some issues with custom JS in online CRM organizations that have recently received the December update.  MS has published a blog post about the same topic, which goes into details regarding script differences between browsers and how to identify potential problem areas with a validation tool they’ve published.

Dynamics CRM Blog – Script Errors After the December 2012 Service Update

Screenshot of the validation tool from MS