
Originally Posted by
mrmeech
As you've already discovered, this is a simple case of javascript libraries conflicting with one another. I'm guessing you're only using slimbox elsewhere on your site (product pages, catalog, etc..) but not on the checkout... so to point you in the right direction, what you could try is locating the code for where mootools is being inserted into your header, and put an IF statement around it. So, essentially something like, "IF the page is NOT a checkout page, load mootools"