I made a small/fast hack to calendar_day.pl
I added the line after: print <<__END_OF_HTML_CODE__;
<P><center> <a href= "http://servername/closewindow.html"> Close Window
</a> </center>
The closewindow.html has the text:
<html>
<head>
<title>CLOSE WINDOW</title>
</head>
<body ONLOAD= "self.close ()">
</body>
</html>
I'm sure there is a more elegant way of doing this but for me it worked.
Another comment I got was "Could you make the program able to enter dates
from multiple months at a time?" That is way beyond me but I thought
I would pass it along.