Cross-domain issues

I used your JS file and noticed that I was getting cross-domain issues because I was using TypeKit which points to an external domain. I added a check in loadCssCache() that returns false if location.host is not present in the URL of the stylesheet OR if it's not present in the first 50 characters of the location.host (this was a check against TypeKit because I do have to include my domain in the URL of the stylesheet).