Q693 How do I run a CGI script without returning anything?

You can point the src property of an image to a CGI script - rather like a page counter - and get the CGI script to return a 1x1 pixel blank image:

<IMG SRC="cgi_script.pl" WIDTH="1" HEIGHT="1">

or, or you want to run the script after the document has finished loading:

<BODY onLoad="if (document.images) document.images['myImage'].src='cgi_script.pl'">

<IMG SRC="blank.gif" WIDTH="1" HEIGHT="1">