rem: var messagePane = GetMessagePane(); try { return (messagePane.getAttribute("collapsed") == "true"); } catch (ex) { return false; } 
add: return GetMessagePane().collapsed; 
context: function IsMessagePaneCollapsed(){  var messagePane = GetMessagePane();  try {    return (messagePane.getAttribute("collapsed") == "true");  }  catch (ex) {    return false;  }}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/28589fd941d368cf72da9c5c18337a3b61842482/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js