<if> Statement For Navbar Link

[dieselpowered]

Hi there everyone, I played around with this a little, but I obviously do not know what I am doing!

I would like to add an <if> statement to a link on my navbar...if members click that link, it take them to the page and the link is removed from the navbar, if they leave that page, the link is then added again.

I know that there <if> <else> statements out there that will change the links, however, I just want it to be removed, not replaced with anything else.

Any help would be most appreciated!

Thank you