Fix small JQuery problem

Please look at the homepage of my site at [login to view URL] The "Learn more now..." link smooth scrolls to the signup box at the bottom of the page. This is correct. If you click any of the eight links in the center section of the page then a Fancybox window opens. This is correct. But... when you click any of the eight links in the center section, the background scrolls upwards. This should not happen, it should stay still. The smooth scrolling should only happen for the "Learn more now..." link. I need a fix for this. I can install it myself. Please respond only if you are *certain* you can provide a solution.