BOM_Window_w_h.html

<!DOCTYPE html>
<html>
<body>

<p id="demo"></p>
<!--<button id = "sibi">GetScreenHW</button>-->

<script>
	//btn.onclick = function()
	//{
var btn = document.getElementById('sibi');
var w = window.innerWidth
|| document.documentElement.clientWidth
|| document.body.clientWidth;

var h = window.innerHeight
|| document.documentElement.clientHeight
|| document.body.clientHeight;

var x = document.getElementById("demo");
x.innerHTML = "Browser inner window width: " + w + ", height: " + h + ".";
//}
</script>

</body>
</html>