<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(document).keydown(function(e){
if(e.which=="13"){
$("#show").html($("#show").html()+"<br>\n");
}else{
$("#show").html( $("#show").html() + "," + e.which);
}
})
</script>
</head>
<body>
<div id="show" style="background:#ffaaaa;"></div>
</body>
</html>