function validateEmailAddress(what)
{
    //
    // Validate username field value
    //

	var thePattern = /^[a-zA-Z0-9\-_.]+@([a-zA-Z0-9\-_]+\.{0,1}){2,}$/ ;
	var theReturn = true ;
	
	if (!what.value.match(thePattern))
	{
		insertErrorData("Your email address is badly formed.") ;
		theReturn = false ;
	}
	
    return theReturn ;
}

function validateCaptcha(what)
{
    //
    // Validate Captcha field value
    //

	var thePattern = /^\d{6,6}$/ ;
	var theReturn = true ;
	
	if (!what.value.match(thePattern))
	{
		insertErrorData("Code must be 6 digits long.") ;
		theReturn = false ;
	}
	
    return theReturn ;
}