rem: window.open('chrome: 'chrome,width=540,height=360,resizable=yes'); 
add:  const kWindowMediatorContractID = "@mozilla.org/appshell/window-mediator;1"; const kWindowMediatorIID = Components.interfaces.nsIWindowMediator; const kWindowMediator = Components.classes[kWindowMediatorContractID].getService(kWindowMediatorIID); var lastCertManager = kWindowMediator.getMostRecentWindow("mozilla:devicemanager"); if (lastCertManager) lastCertManager.focus(); else { window.open('chrome: 'chrome,width=540,height=360,resizable=yes'); } 
context: function openDeviceManager(){    window.open('chrome://pippki/content/device_manager.xul',  "devmgr",                'chrome,width=540,height=360,resizable=yes');}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/1c850ced922433325165488a37da5b4032620c7d/pref-security.js/clean/security/manager/pki/resources/content/pref-security.js