Easy enough question

As the title says, this will probably be an easy answer from you guys.
Im making a UI for a school project.
Its only a backgorund stretched out as an image.
A button and another image..
The button should enable the image that is disabled. and with another click on that button ( or another button) the image should disapear, showing a new image with another button, or just disapear completly.
Its for a "doctors log entries" on hes computer.
there should be buttons saying "medical log 22098"
if...

Easy enough question