rem:  var instantApply = false; 
add: var prefsService = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService).getBranch(null) var instantApply = prefsService.getBoolPref("browser.preferences.instantApply"); 
context: function openOptionsDialog(containerID, paneURL, itemID){  // var instantApply = gPrefService.getBoolPref("browser.preferences.instantApply");  var instantApply = false;  var features = "chrome,titlebar,toolbar,centerscreen" + (instantApply ? ",dialog=no" : ",modal");  var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]           .getService(Components.interfaces.nsIWindowMediator);    var win = wm.getMostRecentWindow("Mail:Preferences");  if (win)    win.focus();  else     openDialog("chrome://messenger/content/preferences/preferences.xul","Preferences", features);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/637a3991a6c4b2d46c98e06412e8211e5a757ab5/mailCore.js/clean/mail/base/content/mailCore.js