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: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/45c64478b81c59e8987c189cf96dd18929c075e5/editorApplicationOverlay.js/buggy/editor/ui/composer/content/editorApplicationOverlay.js