求大神指教，谢谢啦
<!DOCTYPE html>
<html>
<head>
<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk"/>
<script type="text/javascript">
function=openWindow()
window.open("http://www.imooc.com/")
var mymessage=confirm("是否打开？")
if(mymessage==true)
{window.open("http://www.imooc.com/","width=400","height=500","menubar=no","toolbar=no")}
else
{window.close("http://www.imooc.com/")}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
不知道错在了哪里
