Reload cart after check the TOS checkbox

What ist the reason for the reload of the cart after check the TOS checkbox on the bottom of the page. After that the customer have to scroll down again to click the buy button. Is there a way to stop the reloading?

Could you please provide me with a URL to your website, either here or via PM (click the “Private Message” text underneath my avatar) so that I may analyze it? It is a lot easier for us to diagnose issues when we have a live site to examine.