新窗口不起名字是不是就是原始大小，后面的参数都没用了
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>window.open</title>
<script type="text/javascript">
function Wopen(){
window.open("http://www.imooc.com","width=600px,height=400px,top=100px,lefi=0");
}
</script>
</head>
<body>
<input name="button" type="button" onClick="Wopen()" value="点击我，打开新窗口!" / >
</body>
</html>
