Prevent getComputedStyle exception when running in IFRAME in Firefox
Fixes samyk/evercookie#26 and samyk/evercookie#45 when jQuery is available
fixed some errors
Merge pull request #67 from paul-at/ff-iframe-computed-style

Prevent getComputedStyle exception when running in IFRAME in Firefox
Merge pull request #66 from paul-at/silverlight-append-child

Prevent appendChild exception when jQuery is available
Merge pull request #69 from b00nb0b/patch-02

Fixed some errors and made the example work again