rem: window.open('chrome: 'chrome,width=500,height=400,resizable=yes,dialog=no'); 
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:certmanager"); if (lastCertManager) lastCertManager.focus(); else { window.open('chrome: 'chrome,width=500,height=400,resizable=yes,dialog=no'); } 
context: function openCertManager(){    window.open('chrome://pippki/content/certManager.xul',  "",                'chrome,width=500,height=400,resizable=yes,dialog=no');}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/0203ef68931a4f2d8123fd16161c5a7ea550f4d8/pref-security.js/clean/security/manager/pki/resources/content/pref-security.js