/*** Set Homepage Link plugin** Copyright (c) 2009 Bibby Chung* Blog: http://bibby.be** Dual licensed under the MIT and GPL licenses:* http://www.opensource.org/licenses/mit-license.php* http://www.gnu.org/licenses/gpl.html** just for ie and firefox** @example * $('#Button1').click(function() {*  $.setHomepage('http://google.com');* }); */jQuery.extend({setHomepage: function(url) {if (document.all) { document.body.style.behavior = 'url(#default#homepage)'; document.body.setHomePage(url);}else if (window.sidebar) { if (window.netscape) {  try {   netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");  }  catch (e) {   var strTemp = '';   strTemp += "this action was aviod by your browser,";   strTemp += "if you want to enable,please enter about:config in your address line,";   strTemp += "and change the value of signed.applets.codebase_principal_support to true";   alert(strTemp);  } } var prefs = Components.classes['@mozilla.org/preferences-service;1']     .getService(Components.interfaces.nsIPrefBranch); prefs.setCharPref('browser.startup.homepage', url);}}});