add: selected_certs = []; 
context: function backupCerts(){  getSelectedCerts();  var numcerts = selected_certs.length;  var bundle = srGetStrBundle("chrome://pippki/locale/pippki.properties");  var fp = Components.classes[nsFilePicker].createInstance(nsIFilePicker);  fp.init(window,          bundle.GetStringFromName("chooseP12BackupFileDialog"),          nsIFilePicker.modeSave);  fp.appendFilter("PKCS12 Files", "*.p12");  fp.appendFilters(nsIFilePicker.filterAll);  var rv = fp.show();  if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {    certdb.exportPKCS12File(null, fp.file,                             selected_certs.length, selected_certs);  }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/9bd7d0e5add70b781139d86dfaa39f7ce76db79d/certManager.js/buggy/security/manager/pki/resources/content/certManager.js