One thing I notice in your Javascript where the condition is false you need to return false otherwise the form will go ahead and submit anyway. 
print qq|if (answer == false ){ \n|;
print qq|document.write('You chose to Cancel. Closed window.');\n|;
print qq|return false;\n|;

[download]
Also, I think you need the Javascript function to be called on the form like this: 
print qq|<form name="form1" action="disable.cgi" method="post" onsubmi
+t="return CheckForm_onclick()">|

[download]
Note also the use of the quote operator qq|| so you don't need to escape the quote marks etc.

In reply to Re: [Re]confirm box by tangent
in thread [Re]confirm box by kbee

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