<!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 open=confirm("您确定打开网址么？");
if(open==true){
var my=prompt("请输入您想访问的网址","http://www.baidu.com");
if(my!=null){
window.open(my,"_blank",'height=400px,width=500px,menubar=no,toolbar=no');
}
else{
alert("拜拜了您！");
}
}
else{
alert("拜拜了您！");
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
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