rem: if (aEvent.type == "mousedown") 
add: if (aEvent.type == "mousedown") { aEvent.stopPropagation(); aEvent.preventDefault(); 
context:   handleEvent: function(aEvent)  {    var target = viewer.mDOMView.showAnonymousContent ? aEvent.originalTarget : aEvent.target;    if (aEvent.type == "mousedown")      viewer.doSelectByClick(target);    else if (aEvent.type == "mouseover")      viewer.selectByClickOver(target);  }
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/57b379ab1ff7c306bc9f34c44ac0e7c7d1713655/dom.js/clean/extensions/inspector/resources/content/viewers/dom/dom.js