add:  /* more workaround for 39655 */ if (messagePaneBox && gFolderJustSwitched) { messagePaneBox.setAttribute("collapsed", "false"); gFolderJustSwitched = false; } 
context: function ShowMessageHeaderPane(){   if (gViewAllHeaders)  {    HideMessageHeaderPane();    msgPaneData.ViewAllHeadersToolbar.removeAttribute("collapsed");    msgPaneData.ViewAllHeadersBox.removeAttribute("collapsed");  }  else  {    msgPaneData.ViewAllHeadersToolbar.setAttribute("collapsed", "true");    msgPaneData.ViewAllHeadersBox.setAttribute("collapsed", "true");        var node = document.getElementById("headerPart1");    if (node)      node.removeAttribute("collapsed");    node = document.getElementById("headerPart2");    if (node)      node.removeAttribute("collapsed");/*    node = document.getElementById("headerPart3");    if (node)      node.removeAttribute("collapsed");*/  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/57541f634e9ba0c48fa8debceb513536de2eeef9/msgHdrViewOverlay.js/clean/mailnews/base/resources/content/msgHdrViewOverlay.js