rem: homePageField.value = url; 
add: homePageField.value = gDefaultPage; updateHomePageButtons(); 
context: function setHomePageToDefaultPage(){  var prefService = Components.classes[PREFSERVICE_CONTRACTID]                              .getService(nsIPrefService);  var pref = prefService.getDefaultBranch(null);  var url = pref.getComplexValue("browser.startup.homepage",                                  nsIPrefLocalizedString).data;  var homePageField = document.getElementById("browserStartupHomepage");  homePageField.value = url;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/b52524650c8bc7e17e292d52ca194c7cd1ad7b7e/pref-navigator.js/clean/xpfe/components/prefwindow/resources/content/pref-navigator.js