为什么一模一样的代码，我用DW就是显示不出来，这个是肿么回事，求解
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<script type="text/javascript">
var otest=document.getElementById("test");
var newnode=document.createElement("li");
newnode.innerHTML="php";
otest.insertBefore(mewnode,otest.lastChild);
</script>
</body>
</html>
