需要重新加载我的Jquery脚本的页面才能再次运行

I have two buttons: menu_icon and exit_icon. When I click on the menu_icon, the menu shows (I just do an animation with CSS3). It goes away when I click exit_icon, but it will only work once. I have to reload the page if I want to re-open the menu. I have two buttons: menu_icon and exit_icon. Wh