function checkss()
  {
      if (document.searchs.skey.value=="请输入关键字"){
	      alert("搜索关键字不能为空")
		  document.searchs.skey.focus();
		  return false
		    }
			      if (document.searchs.skey.value==""){
	      alert("搜索关键字不能为空")
		  document.searchs.skey.focus();
		  return false
		    }
		  return true
  }
  


function addToFavorite(){
	var title = document.title;
	window.external.AddFavorite(location.href,title);
}