The Markup with a Script
<html>
<head></head>
<body>
<input type="button" value="Click Me" onclick="newWindow()" />
</body>
<scripttype="text/javascript">
function newWindow() {
var win = window.open('popupwindow.htm', 'Popup Window',
'width=600, height=600, top=70, left=100, resizable=1, menubar=yes', true);
win.focus();
}
</>script>
</html>