add: if (!this._enabled) return; 
context:     _cellClickListener: function(event) {        var cell = tw_getEventTarget(event);        var rowIdx = this._getRowIndex(cell);        var newDt = parseInt(cell.firstChild.nodeValue);        if (rowIdx == 0 && newDt >= 23) {            this._incrementMonth(-1);        } else if (rowIdx >= 4 && newDt <= 14) {            this._incrementMonth(1);         }        this.setSelectedDate((this._curDate.getMonth() + 1) + "/" + newDt + "/" + this._curDate.getFullYear());        var formattedDate = this._getFormattedDate(this._selectedDate);        this.firePropertyChange("selectedDate", formattedDate);        var action = this._getClickAction(event.type, formattedDate);        if (action == null) return;        this.fireAction(action, formattedDate);    },
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/37796fea05d0eb86951d2f34aedeb66e8b500920/DateBox.js/buggy/src/thinwire/render/web/resources/DateBox.js