Use javascript to control the affixing
Remove unnecessary stylings because javascript is taking care of business
Remove the data attributes for the affixing, and set a new attribute to control the top position of the affixed content
Move the Facebook SDK init function down to the bottom and change the language to icelandic
Wrap get_all_imgs function in a try..except block to prevent a IndexError happening. Make sure that if the default image is passed that the url passed is correct