If it is a
web application use this
Javascript
.
function fnScreenWidthHeight() {
var viewportwidth;
var viewportheight;
if (typeof window.innerWidth != 'undefined') {
viewportwidth = window.innerWidth;
viewportheight = window.innerHeight;
}
else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0) {
viewportwidth = document.documentElement.clientWidth;
viewportheight = document.documentElement.clientHeight;
}
else {
viewportwidth = document.getElementsByTagName('body')[0].clientWidth;
viewportheight = document.getElementsByTagName('body')[0].clientHeight;
}
alert('Your viewport width is ' + viewportwidth + 'x' + viewportheight);
}