设为首页

function setHomepage() {
  if (document.all) {
    document.body.style.behavior = "url(#default#homepage)";
    document.body.setHomePage("http://w3cboy.com");
  } else if (window.sidebar) {
    if (window.netscape) {
      try {
        netscape.security.PrivilegeManager.enablePrivilege(
          "UniversalXPConnect"
        );
      } catch (e) {
        alert(
          "该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true"
        );
      }
    }
    var prefs = Components.classes[
      "@mozilla.org/preferences-service;1"
    ].getService(Components.interfaces.nsIPrefBranch);
    prefs.setCharPref("browser.startup.homepage", "http://w3cboy.com");
  }
}