rem: hdrs = gPrefs.GetCharPref("mailnews.customHeaders"); 
add: hdrs = gPrefs.getCharPref("mailnews.customHeaders"); 
context: function onLoad(){    gPrefs = Components.classes["@mozilla.org/preferences;1"].getService(Components.interfaces.nsIPref);    var hdrs;    try    {       hdrs = gPrefs.GetCharPref("mailnews.customHeaders");    }    catch(ex)    {      hdrs =null;    }    gHeaderInputElement = document.getElementById("headerInput");    gHdrsList = document.getElementById("headerList");    gTree = document.getElementById("headerTree");    gArrayHdrs = new Array();    addButton = document.getElementById("addButton");    removeButton = document.getElementById("removeButton");    initializeDialog(hdrs);    doSetOKCancel(onOk, null);    updateButtons();    moveToAlertPosition();}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/faf03ce445712b372523f881cc3144cfadc7a611/CustomHeaders.js/buggy/mailnews/base/search/resources/content/CustomHeaders.js