rem: var bx = this.mOutliner.boxObject; this.mOlBox = bx.QueryInterface(Components.interfaces.nsIOutlinerBoxObject); 
add: this.mOlBox = this.mOutliner.outlinerBoxObject; 
context: function ComputedStyleViewer(){  this.mObsMan = new ObserverManager(this);  this.mURL = window.location;    this.mOutliner = document.getElementById("olStyles");  var bx = this.mOutliner.boxObject;  this.mOlBox = bx.QueryInterface(Components.interfaces.nsIOutlinerBoxObject);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/732dc6261a2ac11c9af2f33803020c5eb226df56/computedStyle.js/buggy/extensions/inspector/resources/content/viewers/computedStyle/computedStyle.js