Find OS Name/Version using JScript

var wbemFlagReturnImmediately = 0x10;
var wbemFlagForwardOnly = 0x20;
var objWMIService = GetObject("winmgmts:\\.\root\CIMV2");
var colItems = objWMIService.ExecQuery("SELECT * FROM Win32_OperatingSystem", "WQL",
                                      wbemFlagReturnImmediately | wbemFlagForwardOnly);

var enumItems = new Enumerator(colItems);
var objItem = enumItems.item();
WScript.Echo("Caption: " + objItem.Caption);