​x
 
<html>
<head>
<script type="text/javascript">
function winTest()
  {
  var txt1 = "This is a new window.";
  var txt2 = "This is a test.";
  win.document.open("text/html","replace");
  win.document.writeln(txt1);
  win.document.write(txt2);
  win.document.close();
  }
</script>
</head>
<body>
​
<script type="text/javascript">
var win=window.open('','','width=200,height=200');
winTest();
</script>
​
</body>
</html>
​