<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>Overly Simple Form Validation</title>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<script type="text/javascript">
function validate()
{
if (document.myform.username.value == "")
{
alert('Please enter your name');
return false;
}
else
return true;
}
</script>
</head>
<body>
<form name="myform" id="myform" action="http://www.htmlref.com" method="get" onsubmit="return validate();">
<b>
Name:</b>
<input type="text" name="username" id="username" size="25" maxlength="25" />
<br />
<br />
<input type="submit" value="Submit" />
</form>
</body>
</html>