Modify existing, working web page. Currently there are 6 buttons, each causes images on the screen to move to a relative positioning with respect to each other. The positions are hardwired to the buttons. I need two modifications, 1) I want the buttons to only be activatable in order. After clicking on button 1, the only button not grayed out should be button 2, then 3, then 4 etc. The activate button should stay in a unique color state while activated. When 6 is activated then 5 can be reactivated. No going backwards just 1 --> 6 and 6-->1.
My buttons are across the bottom, it would good if they ran down the left side instead. No server side at all.