var aY = 0;
		var pY = 0;
		var topoff = document.getElementById("feature_list").offsetTop;
		var stopit = document.body.offsetHeight - document.getElementById("feature_list").offsetHeight - topoff;
		
		function floating()
		{
			if (window.pageYOffset) { pY = window.pageYOffset; }
			else if (document.documentElement) { pY = document.documentElement.scrollTop; }
			else if (document.body) { pY = document.body.scrollTop; }
			aY += (pY - aY - topoff);
			if ((aY < stopit) && (aY >= 0)) { document.getElementById("feature_list").style.top = aY + "px"; }
		}
		
		window.onscroll = floating;
		
		if (window.innerHeight) { document.getElementById("feature_list").style.height = window.innerHeight - topoff - 10 + "px"; }
		else if (document.documentElement.clientHeight) { document.getElementById("feature_list").style.height = document.documentElement.clientHeight - topoff - 10 + "px"; }