function setHomepage()
    {
        if (document.all)
        {
            document.body.style.behavior='url(#default#homepage)';
            document.body.setHomePage('http://www.onesound.cn/');
        } else if (window.sidebar) {
            if(window.netscape)
            {
                try
                {
                    netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                }
                catch (e)
                {
                    alert("Firefox暂无此功能，请手动设置。" );
                }
            }
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
        prefs.setCharPref('browser.startup.homepage','http://www.onesound.cn/');
        }
    }