How to get MS Office version installed on the machine

Hi Team ,

How to get MS Office version (Not excel or word) installed on the machine  using Jscript?

var ProgramFiles = aqEnvironment.GetEnvironmentVariable("ProgramFiles", true);
var MSOffFilePath = ProgramFiles +"\\Microsoft Office\\Office14\\EXCEL.EXE"; 
var Officeversion = aqFileSystem.GetFileInfo(MSOffFilePath).VersionInfo.FileMajorVersion;
Log.Message(Officeversion);