Let's get one thing straight. CSS Checkbox is cross browser compatible. That doesn't, however, mean that it we support versions of Internet Explorer that were freshly on the browser market 5+ years ago. As we don't really make any money through this site there was no real incentive to add support for old browsers.
A special thank you goes out to Alan Nanut on this one for providing the vanilla JS architecture to make this patch possible. That is all. Thank you for using CSS Checkbox! Back to the CSS Checkbox Generator.