rem: var autoURL = document.getElementById("networkProxyAutoconfigURL"); var pps = Components.classes["@mozilla.org/network/protocol-proxy-service;1"] .getService(Components.interfaces.nsPIProtocolProxyService); pps.configureFromPAC(autoURL.value); 
add: Components.classes["@mozilla.org/network/protocol-proxy-service;1"]. getService().reloadPAC(); 
context:   reloadPAC: function ()  {    var autoURL = document.getElementById("networkProxyAutoconfigURL");    var pps = Components.classes["@mozilla.org/network/protocol-proxy-service;1"]                        .getService(Components.interfaces.nsPIProtocolProxyService);    pps.configureFromPAC(autoURL.value);  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/508d41a568203e5a1cc8ce35d91083a7dc044c20/connection.js/buggy/browser/components/preferences/connection.js