Do you mean the downloads from
http://www.hoerstemeier.com/moon.htm ?
These are neither website (PHP) nor AJAX (JavaScript) programs.. they are written in Delphi (a TurboPascal derivative) and display stuff in a window on your PC (AFAIK).
You don't need the TMoon download -- it just contains the Delphi source code in case you wanted to compile it yourself.
The moontool.zip contains Windows setup.exe file which would install the application on your system. However, trying to run that SETUP.EXE (1999 date) is refused by Windows 10 (on my system), likely because it isn't signed code, so is prevented from running.
I suggest you abandon that app .. It likely only runs on Windows XP/7/Vista and not on Windows10