Someone

//normal shizzle here

<style type ="text/css">
body {background-color: #bddcf4; text-align: center}
#info {margin-left: auto; margin-right: auto; width: 50%; }
</style>

<script type="text/javascript">
	function toggle(me){
	var id=me;
		if (document.getElementbyId('id').style.visibility=="hidden"){
			document.getElementbyId('id').style.visibility="visible";
			}
		else {
			document.getElementbyId('id').style.visibility="hidden";
			}
		}
</script>
</head>
<body>

//html stuff here
<a href="#" onclick="toggle(info)">Info</a>
<div id="info" style="visibility: hidden"><h4>About:</h4> yadadada

//closing tags