function validateFieldLength(fieldVal,minLength,maxLength,varName)
{
	if (fieldVal.length == 0)
	{
		alert(varName + ' is a required field - please enter a valid value');
		return false;
	}
	if ((minLength > 0) && fieldVal.length < minLength)
	{
		if (minLength == maxLength)
			alert('Expected ' + varName + ' length is ' + minLength + ' characters (current length is ' + fieldVal.length + ')');
		else
			alert('Minimum ' + varName + ' length is ' + minLength + ' characters (current length is ' + fieldVal.length + ')');
		return false;
	}
	if ((maxLength > 0) && (fieldVal.length > maxLength))
	{
		alert('Maximum ' + varName + ' length is ' + maxLength + ' characters (current length is ' + fieldVal.length + ')');
		return false;
	}
	return true;
}