<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript">
function openWindow(){
var winWidth=screen.availWidth/2;
var winHeight=screen.availHeight/2;
var winTop=(screen.availHeight-winHeight)/2;
var winLeft=(screen.availWidth-winWidth)/2;
var
para="top="+winTop+",left="+winLeft+",width="+winWidth+",height="+winHeight;
var win=window.open("Navigator.htm","url",para);
win.focus();
}
</script>
</head>
<body>
<input type="button" value="打开新窗口" onclick="openWindow()">
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript">
document.write("浏览器名称:"+navigator.appName+"<br>");
document.write("浏览器版本:"+navigator.appVersion+"<br>");
document.write("客户端操作系统:"+navigator.platform+"<br>");
</script>
</head>
<body>
</body>
</html>
自动检测版本,只可以在IE窗口显示