var tlkErrorDecorator = $.inherit({
    start : function() {
        this.errSelect = '.' + this.errClass; 
        if ($(this.errSelect).length > 0) {
            $(this.errSelect).remove();
        }
        $('#' + this.formId)
          .prepend('<ul class="' + this.errClass + '"</ul>');
        $(this.errSelect).hide();
    },
    addError : function(control, messageType) {
        var message = '';
        if (messageType == 1) {
            message = control.errRequired;
        } else if (messageType == 2) {
            message = control.errInvalid;
        } else {
            message = "Error on '" + control.label + "' filed";
        }
        $(this.errSelect).append("<li> " + message + "</li>");
    },
    end : function() {
        $(this.errSelect).show();
    }
});