var clearFieldFlag = true;

function reloadCaptcha() {
	document.getElementById('registrationForm:captcha').src = 'servlets/captcha?' + new Date().getTime();
}

function clearCaptchaField(id, value) {
	if (clearFieldFlag) {
		if (document.getElementById(id).value == value) {
			document.getElementById(id).value = '';
			clearFieldFlag = false;
		}
	} 
}