innerHTML showing html text

<html>
<head>
 
<style type="text/css">
.shw {
font-weight: bold;
color: #FF0000;
}
</style>
<script language="javascript" type="text/javascript">
function cng() {
htm.innerHTML = "<font size='6'>" + ing.value;
}
setInterval(cng, 100);
</script>
 
</head>
<body>
 
<textarea name="ing" rows="10" cols="100">
Yo Mama Said What
</textarea>
<br />
<br />
<br />
<br />
<div id="htm" class="shw">
</div>
 
</body>
</html>

Hey guys, how would i modify this to allow the htm div to show html codes for eg, it would show

 <font size='6'>Yo Mama Said What</font>

any ideas?