function print_os()
{
	var a = navigator.userAgent.toLowerCase();
	if(a.indexOf("95")>-1)
		document.write("Windows 95");
	else if(a.indexOf("98")>-1)
		document.write("Windows 98");
	else if(a.indexOf("9x 4.9")>-1)
		document.write("Windows Me");
	else if(a.indexOf("nt 5.1")>-1)
		document.write("Windows XP");
	else if(a.indexOf("nt 5")>-1)
		document.write("Windows 2000");
	else if(a.indexOf(" NT")>-1)
		document.write("Windows NT");
}

function print_browser()
{
	document.write(navigator.appName);
}