SM/Contact Us Floating Button Plugin

What is a plugin that allows for the social media and contact us buttons to float either on the left or right side of the screen or your content border? With all the wasted space I usually have on the left or right of my pages’ full width, it would be the perfect place to have floating SM/contact buttons that float there no matter if the page is scrolled up or down.

There is one by codecanyon
http://codecanyon.net/item/contact-form-popup/4080981

but this one floats at the bottom… which might be ok but much rather have it on the right side, and I have seen it somewhere!

Thanks!