rem: get panelset() { return this.mPanelSet; }, 
add: get isViewingContent() { return this.mPanelSet.getPanel(0).subject != null; }, 
context:   get panelset() { return this.mPanelSet; },
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/3ef32248659477aa9f181be0b473b5decce695e6/inspector.js/clean/extensions/inspector/resources/content/inspector.js