[thelist] ColdFusion required="yes" attribute doesn't work in <CFINPUT>

Wed Jul 12 10:33:31 CDT 2006

This is a very basic question with a very elusive answer. Why wouldn't 
the required="yes" attribute work in a <CFINPUT>? Here's my very 
simplified code, and it doesn't work:

<cfparam name="form.Test" default="">

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>
<head>
	<title>Untitled</title>
</head>

<body>

<cfform action="#cgi.Script_Name#" name="TestForm">
	<cfinput type="Text" name="Test" required="Yes" message="Please" 
value="#form.Test#">
	<input type="Submit">
</cfform>

</body>
</html>

Any ideas?