Add social sharing
Don't use addthis for email sharing
Remove link to share with stumble upon
code style
Add original source
Add a background to the overlay
ie8 fixes for the share form
fall back to black if rgba is not supported
prevent the default action of the share link
Fix the url for facebook shares
Move the share link to the top right
share THIS video
make links mobile friendly
make selectors stronger for 3.1
Make the share button more visible
Correctly grab the URL

Depending on the context, the url might be different.  For example, the manager controller returns the $url . 'manage/', instead of just the $url.  In this case, we always need just the $url.
Only add a dark background to the head

The head contains the title and share link.  The dark background over the entire overlay was making the poster image too dark.  So, only make the head section dark.
Improve perceived load time

Wait for the share css to load before adding the html.  This should prevent unformatted html from appearing for a few moments.
Don't use noConflict
missing space after #maincontent