function addFav(url,title)
{
 if (document.all)
    {
       window.external.addFavorite(url,title);
    }
    else if (window.sidebar)
    {
       window.sidebar.addPanel(title, url, "");
 }
}

function setHome(strUrl)
{
 if (document.all)
    {
        document.body.style.behavior='url(#default#homepage)';
        document.body.setHomePage(strUrl);
    }
    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',strUrl);
     }
}