rem: ev.cancelBubble = true; 
add: tw_cancelEvent(ev); 
context:     _closeButtonMouseDownListener: function(ev) {        this.setFocus(true);        if (tw_getEventButton(ev) != 1) return;  //only if left click                this._closeButton.style.borderStyle = "inset";        ev.cancelBubble = true; //TODO: is this cross browser?    },
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/37796fea05d0eb86951d2f34aedeb66e8b500920/Dialog.js/clean/src/thinwire/render/web/resources/Dialog.js