function addCookie(url,name){　 // 加入收藏夹  
       if (document.all){  
           window.external.addFavorite(url,name);  
       }else if (window.sidebar){  
           window.sidebar.addPanel(name, url, "");  
       }  
   }  
         
   function setHomepage(url){　 // 设置首页  
       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) {  
                   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', url);  
       }  
   }