function addBookmark(title,url) 
  	{
	    if (window.sidebar) { 
	     window.sidebar.addPanel(title, url,""); 
	     } 
	    else if( document.all ) {
	     window.external.AddFavorite( url, title);
	     } 
	    else if( window.opera && window.print ) {
	      return true;
	    }
   }
		function checkInput()
		{
			var uName=document.getElementById("loginName");
			var uPwd=document.getElementById("loginPwd");
			var bool=false;
			if(uName.value!="")
			{
				bool=true;
			}
			else
			{
				alert("请输入用户名");
				uName.focus();
				bool=false;
			}
			return bool;
	 }