rem: var folderPaneBox = GetFolderTree().parentNode; return folderPaneBox.getAttribute("collapsed") == "true" || folderPaneBox.getAttribute("hidden") == "true"; 
add: return GetFolderTree().parentNode.collapsed; 
context: function IsFolderPaneCollapsed(){  var folderPaneBox = GetFolderTree().parentNode;  return folderPaneBox.getAttribute("collapsed") == "true"    || folderPaneBox.getAttribute("hidden") == "true";}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/28589fd941d368cf72da9c5c18337a3b61842482/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js