browser_version= parseInt(navigator.appVersion);
				browser_type = navigator.appName;
		
				if (browser_type == "Microsoft Internet Explorer") {
					document.write("<link REL='stylesheet' HREF='tyylit_ieEtu.css' TYPE='text/css'>");
				}
				else {
					document.write("<link REL='stylesheet' HREF='tyylitEtu.css' TYPE='text/css'>");
				}