Just copy and paste the code below into your website.

<A href="http://www.nif.org?source=banner"><IMG style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px" src="https://wadmin2.getactive.com/preview!www.nif.org/assets/banner_main.jpg" /></A>

Here is what the badge looks like: