Handle keyboard based menu navigation.
if(evt.ctrlKey || evt.altKey){ return; } switch(evt.keyCode){ case dojo.keys.RIGHT_ARROW: this._moveToPopup(evt); dojo.stopEvent(evt); break; case dojo.keys.LEFT_ARROW: if(this.parentMenu){ this.onCancel(false); }else{ dojo.stopEvent(evt); } break; }