function getwinsize(){
			var myWidth = 0, myHeight = 0;
			if( typeof( window.innerWidth ) == 'number' ) {myWidth = window.innerWidth;myHeight = window.innerHeight;}
			else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
			    myWidth = document.documentElement.clientWidth;
			    myHeight = document.documentElement.clientHeight;
			} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
				myWidth = document.body.clientWidth;
				myHeight = document.body.clientHeight;
			}
	document.getElementById('window_width').value = myWidth;
	document.getElementById('window_height').value = myHeight;
	}