Dishwasher pushes our button (or we its)

Broke the on button on the dishwasher. Margaret took panels off to get at it. Unfortunately she took off two screws that she shouldn't have and the door became detached from its spring-loaded hinges. We finally sorted that out but eventually found that the plastic button was broken. We'll try to use it without that button (the actual switch is still accessible, even with this piece off).