Good news.  blockchain.info now supports CORS so I can connect directly to them while I'm finalizing my own local database of unspent ouputs for bitcoin-secured.  I'll try to push the new version out tonight.  Right now, the script relies on Yahoo to relay the request, which means that blockchain.info's API request limit is quickly reached if a lot of people use it.  This will solve that problem.

NOTICE: bitcoin-secured will be offline shortly will I update it to supports blockchain.info's CORS.  While it's down, please be aware that if you use a non-SSL link for the online version of this software, it's very vulnerable to someone swapping out your Bitcoin address for another.  Either use https://bitcoin-secured.com when it's back up or run it locally (on localhost).  Or wait for someone else to host it on an SSL-enabled URL.