Need Drop Down Prototype Help

Maybe you can help me. I trying to do like an accordian drop down menu. I have three sections: 1-3 have been successful to go to the next page, after the drop down. I have create an arrow to go back to the main menu. However, when I click on the 2nd row and the 3rd row to make sure the page and forth on the main menu is smooth (before going to the next page), The drop down for the second row does not come down and would jump to the next page for the 1st section. Can you tell me what I am doing wrong? This is a project for a client.