function addCookie()
{
 if (document.all)
    {
       window.external.addFavorite('http://www.weather.com.cn','中国天气网');
    }
    else if (window.sidebar)
    {
       window.sidebar.addPanel('中国天气网', 'http://www.weather.com.cn', "");
 }
}

function setHomepage()
{
var url = window.location.href; 
 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( "设为首页操作被浏览器拒绝，如果想启用设为首页功能，请选择信任此代码" ); 
         }
    }
    var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
    prefs.setCharPref('browser.startup.homepage',url);
 }
}