function validLength(item, minLength, maxLength){
	if (item.length < minLength || item.length > maxLength){
		return false;
	}
	else {
		return true;
	}
}

function validate(){
	message = "";
	
	if (!validLength(document.licence.givenName.value, 2, 32)){
		message += "Invalid Given Name. \n";
	}
		
	if (!validLength(document.licence.familyName.value, 2, 32)){
		message += "Invalid Family Name. \n";
	}
		
	if (!validLength(document.licence.contactEmail.value, 7, 128) ||
		!(document.licence.contactEmail.value.indexOf('@') > 0) ){
		message += "Invalid Email. \n";
	}

	if (!validLength(document.licence.contactPhone.value, 8, 16)){
		message += "Invalid Phone number. \n";
	}
		
	if (message != ""){
		alert(message);
                return false;
	}
        else {
            return true;
        }	
}