return to original url

[Maximize0987]

I have been using this example as my basis for all my webservers. Thank you very much!
I am hoping to have each button return me to the original page.

my webserver
123.456.789.001:80
if I turn on 5
the new page is
123.456.789.001/5/on
how can I get the same results, but it taking me back to
123.456.789.001:80
automatically so that refreshes are good to go?

thanks again