Turn off tooltip from Checkout button

When I mouseover the Checkout button here (http://www.sidelinesportsdoc.com/usclubsoccer/store/cart/) I get a stupid tooltip which is way off in the middle of nowhere for various reasons. I want it gone. How do I get rid of tooltips on this page/checkout button?

Note I cannot set .ui-tooltip display to none because it then hides the tooltip on the Checkout page which comes up when the user enters a wrong password. I only need tooltips disabled on the cart URL above.