function counterUpdate(textareaid, fieldid, max) {	
        var field = document.getElementById(textareaid);	
        var txtField = document.getElementById(fieldid);
        if (field && field.value.length >= max) {
			field.value = field.value.substring(0, max);
        }
        if (txtField) { 
                txtField.innerHTML = max - field.value.length;
        }
}