// JScript 文件
	function MoveFloat() {
			var y = 0;
			var docuTop = document.body.scrollTop?document.body.scrollTop:document.documentElement.scrollTop;
			var y = docuTop + y;
			document.all.topbar.style.pixelTop = y;
			}
			
			function hiddenfloat()
			{
				document.all.topbar.style.visibility="hidden";
			}
		window.setInterval("MoveFloat();", 20);