Here we use the createPopup() method which is used to create
the Pop-Up Window
<html>
<head>
<script type="text/javascript">
function Show()
{
var x=window.createPopup();
var y=x.document.body;
y.style.border="solid blue 1px";
y.style.backgroundColor="Red";
y.innerHTML="My Name is Mahak.";
x.show(150,150,200,50,document.body);
}
</script>
</head>
<body>
<button onclick="Show()">Show
pop-up!</button>
</body>
</html>