rem: this.mRules = this.mDOMUtils.getStyleRules(aElement); 
add: if (doesQI(aObject, "nsIDOMCSSStyleSheet")) { this.mSheetRules = aObject.cssRules; } else { this.mRules = this.mDOMUtils.getStyleRules(aObject); }  if (this.mRules) { for (var i = this.mRules.Count(); i >= 0; --i) { var rule = this.mRules.GetElementAt(i); try { rule = XPCU.QI(rule, "nsIDOMCSSStyleRule"); } catch (ex) { this.mRules.RemoveElement(rule); } } } 
context: function StyleRuleView(aElement){  this.mDOMUtils = XPCU.createInstance("@mozilla.org/inspector/dom-utils;1", "inIDOMUtils");  this.mRules = this.mDOMUtils.getStyleRules(aElement);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/a7c48464e3280bcd1d3585d7cc0bc61c943ad5a5/styleRules.js/clean/extensions/inspector/resources/content/viewers/styleRules/styleRules.js