js点击打开一个固定宽高的网页

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<script type="text/javascript">
function test(){
	window.open('http://www.imooc.com','_black','height=600,width=400');
	}
</script>
<body>
<input type="button" value="点击我,打开新窗口" onclick="test()" />
</body>
</html>