var x = 0, y = 0;

window.onload = function() {
	if (parseInt(navigator.appVersion) > 3) {
		if (navigator.appName=="Netscape") {
	  		x = window.innerWidth;
	  		y = window.innerHeight;
	 	}
	 	
	 	if (navigator.appName.indexOf("Microsoft")!=-1) {
	//  		x = document.body.offsetWidth;
	//  		y = document.body.offsetHeight;
	  		x = document.body.clientWidth ;
	  		y = document.body.clientHeight;
	 	}
	}
}