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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style type="text/css">
#hidden{
display:block;
position:relative;
background:#FFFFCC;
border:1px solid red;
height:auto;
width:auto;
background-color: #E4E4CB;
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function toggle(){
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};
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<body>
<input type="button" id="eventButton" value="hide/show" />
<div id ="hidden">
hidden
</div>
</body>
</html>
