rem: var isSerifPref = document.getElementById("font.default"); this._selectLanguageGroup(langGroupPref.value, isSerifPref.value == "serif"); 
add: this._selectLanguageGroup(langGroupPref.value, this._readDefaultFontTypeForLanguage(langGroupPref.value) == "serif"); 
context:   _rebuildFonts: function ()  {    var langGroupPref = document.getElementById("font.language.group");    var isSerifPref = document.getElementById("font.default");    this._selectLanguageGroup(langGroupPref.value, isSerifPref.value == "serif");  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/b74c618989f1438cc61b5c70a829ab7539d274b0/content.js/clean/browser/components/preferences/content.js