struts 2 根据登录状态变化状态栏

 

<script language="javascript">
	function checkPopedom(){
		var user = <%= session.getAttribute("user")%>;
		if(user == null){	
			document.getElementById("logined").style.display="none";
			document.getElementById("unlogined").style.display="block";
		}else{	
			document.getElementById("logined").style.display="block";
			document.getElementById("unlogined").style.display="none";
		}	
  	}
  	</script>

jsp页面中，定义了两个不同的表格：

 

<table border="0" cellpadding="0" cellspacing="0" id="logined" align="right">

和

<table border="0" cellpadding="0" cellspacing="0" id="unlogined" align="right">