新网页为什么打不开呢？
<!DOCTYPE html>
<html>
<head>
<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk"/>
<script type="text/javascript">
function openWindow(){
var m=confirm("点击确定");
if(m==ture)
{
window.open('http：//www.imooc.com/','_blank','width=400,height=500,menubar=no')
}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
