CMS HTML in CMS posts being rewritten?
 

I'm trying to add some custom HTML into my CMS posts, but I'm having some problems. When trying to add a javascript onclick even to an image, it's changing my javascript: to javascript and when trying to add a url inside the javascript, it's replacing http with ht%20%20tp which appears to be breaking the link.

Any ideas on how to get around this or any updates on a solution to this?

I'm currently using 4.0.3 Patch Level 1

Thanks,
Wil