rem: var node = document.getElementById("headerPart1"); if (node) node.removeAttribute("hide"); node = document.getElementById("headerPart2"); if (node) node.removeAttribute("hide"); node = document.getElementById("headerPart3"); if (node) node.removeAttribute("hide"); 
add: if (gViewAllHeaders) { HideMessageHeaderPane(); msgPaneData.ViewAllHeadersToolbar.removeAttribute("hide"); msgPaneData.ViewAllHeadersBox.removeAttribute("collapsed"); } else { msgPaneData.ViewAllHeadersToolbar.setAttribute("hide", "true"); msgPaneData.ViewAllHeadersBox.setAttribute("collapsed", "true");  var node = document.getElementById("headerPart1"); if (node) node.removeAttribute("hide"); node = document.getElementById("headerPart2"); if (node) node.removeAttribute("hide"); node = document.getElementById("headerPart3"); if (node) node.removeAttribute("hide"); } 
context: function ShowMessageHeaderPane(){   var node = document.getElementById("headerPart1");  if (node)    node.removeAttribute("hide");  node = document.getElementById("headerPart2");  if (node)    node.removeAttribute("hide");  node = document.getElementById("headerPart3");  if (node)    node.removeAttribute("hide");}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/7b9be6ae50dd1399af78f3d125f983c2e4040348/msgHdrViewOverlay.js/clean/mailnews/base/resources/content/msgHdrViewOverlay.js