function init() {

		window.onscroll = function() {

		var y = ((document.body.parentNode.scrollTop != undefined && document.body.parentNode.scrollTop != 0) ? document.body.parentNode.scrollTop : (window.scrollY != undefined ? window.scrollY : -1)); 

			document.getElementById('navigation').className = (y > 200 ? 'fixed' : '');

			document.getElementById('container').className = (y > 200 ? 'navheight' : '');

		}

	}