Fix for unsecure content warning in Internet Explorer.

Fix for unsecure content warning in Internet Explorer as described on http://blog.httpwatch.com/2009/09/17/even-more-problems-with-the-ie-8-mixed-content-warning/.
Merge pull request #27 from rjkip/patch-unsecure-content

Fix for unsecure content warning in Internet Explorer.
Merge remote-tracking branch 'mnot-master/master'