设为主页和加入收藏

$("#addfav").click(function() { 
  var ua = navigator.userAgent.toLowerCase(),
    url =location.href,
    sitename =document.title; 
  if(ua.indexOf("msie 8")>-1){
      external.AddToFavoritesBar(url,sitename,"");//IE8
  }else{
    try{
      window.external.addFavorite(url,sitename);
    }catch(e){
      try{
      window.sidebar.addPanel(sitename,url,"");//firefox
      }catch(e){
      alert("加入收藏失败，请使用Ctrl+D进行添加");
      }
    }
  }
  return false;

});

function SetHome(obj,vrl){ 
      try{ 
          obj.style.behavior=‘url(#default#homepage)‘;obj.setHomePage(vrl); 
          } 
          catch(e){ 
          if(window.netscape) { 
          try { 
          netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
          } 
          catch (e) { 
          alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为‘true‘,双击即可。"); 
          } 
          var prefs = Components.classes[‘@mozilla.org/preferences-service;1‘].getService(Components.interfaces.nsIPrefBranch); 
          prefs.setCharPref(‘browser.startup.homepage‘,vrl); 
          }else{ 
          alert("设为主页失败，该浏览器不支持自动设为主页功能。请手动添加"); 
          } 
      } 
}

<span onclick="SetHome(this,window.location)" target="_self">设为首页</span>

<span id="addfav">加入收藏</span>