rem: popup.addEventListener("popupshowing", initEditorContextMenuItems, false); 
add: if (popup) popup.addEventListener("popupshowing", initEditorContextMenuItems, false); 
context: function initEditorContextMenuListener(aEvent){  var popup = document.getElementById("contentAreaContextMenu");  popup.addEventListener("popupshowing", initEditorContextMenuItems, false);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/b5cb60dfed11bdbaaa29166747aba35746759b26/editorApplicationOverlay.js/clean/editor/ui/composer/content/editorApplicationOverlay.js