function showHideMenu(btn) {
    var obj=document.getElementById("ELPNAVMENU");
    
    if (obj.style.display == "block") {
	   obj.style.display = "none";
	   document.getElementById("showhidelink").innerHTML='显示个人空间';
	} else {
	   obj.style.display = "block";
   	   document.getElementById("showhidelink").innerHTML='隐藏个人空间';
	}
}