<SCRIPT language="JavaScript">
 <!--
  	var OS ="";
 	var agt=navigator.userAgent.toLowerCase();
  	var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1));

	var is_mac    = (agt.indexOf("mac")!=-1);
	var is_os2   = ((agt.indexOf("os/2")!=-1) ||
                    (navigator.appVersion.indexOf("OS/2")!=-1) ||
                    (agt.indexOf("ibm-webexplorer")!=-1));

	var is_linux = (agt.indexOf("inux")!=-1);
	var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));
    var is_win16 = ((agt.indexOf("win16")!=-1) ||
                   (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) ||
               (agt.indexOf("windows 16-bit")!=-1) );
    var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
                    (agt.indexOf("windows 16-bit")!=-1));
    var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
    var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
    var is_win32 = (is_win95 || is_winnt || is_win98 ||
                    ((is_major >= 4) && (navigator.platform == "Win32")) ||
                    (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));


	if (is_mac)
	OS = "MAC";
	else if (is_os2)
    OS = "OS2";
    else if (is_linux)
   	OS = "Linux";
   	else if (is_win95)
   	OS = "Win95";
   	else if (is_win98)
   	OS = "Win98";
   	else if (is_winnt)
   	OS = "Win NT (Win2k, XP...)";
    else if (is_win || is_win31 || is_win32 || is_win16)
	OS = "Windows";

	document.write (""+OS+"");
 -->
 </script>