Custom Header Button: Scroll Down Button

Hi HB Themes!

I was wondering if there’s a way to add a custom button function on the header of this website:
http://www.gowaddle.com
What the button would do is scroll all the way to the bottom, just like the main button on the main Revolution slider.

I was also wondering if there’s a way to fix the styling for the button since it’s not centered vertically in the header, and the button has a lighter shade behind the main orange background.

If it helps, the function that we’re using on the Revolution slider button is:

var scrollToBottom = function() {
window.scrollTo(0, document.body.scrollHeight);
};

Thank you!

-Inje