How to call a simple perl script from HTML without need of HTTPS but simple HTTP ?

I want to call a perl script myscript.pl in my cgi-bin from a HTML web page.
This call should NOT use SSI (because in this case HTTPS://.... protocol is necessary).
Furthermore NO button click should be required (so I am not talking about a perl script in a form).

I only want to call this script automatically when someone load the web page.

How can I do this ?

If necessary the perl script could return a value (e.g. a picture resp. text string) to the calling page.

Wladimir