// this function verifies disk space in kilobytesfunction verifyDiskSpace(dirPath, spaceRequired){  var spaceAvailable;  // Get the available disk space on the given path  spaceAvailable = fileGetDiskSpaceAvailable(dirPath);  // Convert the available disk space into kilobytes  spaceAvailable = parseInt(spaceAvailable / 1024);  // do the verification  if(spaceAvailable < spaceRequired)  {    logComment("Insufficient disk space: " + dirPath);    logComment("  required : " + spaceRequired + " K");    logComment("  available: " + spaceAvailable + " K");    return(false);  }  return(true);}// this function deletes a file if it existsfunction deleteThisFile(dirKey, file){  var fFileToDelete;  fFileToDelete = getFolder(dirKey, file);  logComment("File to delete: " + fFileToDelete);  if(File.isFile(fFileToDelete))  {    File.remove(fFileToDelete);    return(true);  }  else    return(false);}// this function deletes a folder if it existsfunction deleteThisFolder(dirKey, folder, recursiveDelete){  var fToDelete;  if(typeof recursiveDelete == "undefined")    recursiveDelete = true;  fToDelete = getFolder(dirKey, folder);  logComment("Folder to delete: " + fToDelete);  if(File.isDirectory(fToDelete))  {    File.dirRemove(fToDelete, recursiveDelete);    return(true);  }  else    return(false);}// OS type detection// which platform?function getPlatform(){  var platformStr;  var platformNode;  if('platform' in Install)  {    platformStr = new String(Install.platform);    if (!platformStr.search(/^Macintosh/))      platformNode = 'mac';    else if (!platformStr.search(/^Win/))      platformNode = 'win';    else      platformNode = 'unix';  }  else  {    var fOSMac  = getFolder("Mac System");    var fOSWin  = getFolder("Win System");    logComment("fOSMac: "  + fOSMac);    logComment("fOSWin: "  + fOSWin);    if(fOSMac != null)      platformNode = 'mac';    else if(fOSWin != null)      platformNode = 'win';    else      platformNode = 'unix';  }  return platformNode;}var srDest = $SpaceRequired$;var err = initInstall("Quality Feedback Agent", "Quality Feedback Agent", "$Version$"); logComment("initInstall: " + err);var communicatorFolder = getFolder("Program");logComment("communicatorFolder: " + communicatorFolder);if (verifyDiskSpace(communicatorFolder, srDest)){    err = addDirectory("",                       "$Version$",                       "bin",              // jar source folder                        communicatorFolder, // target folder                        "",                 // target subdir                        true );             // force flag     logComment("addDirectory() returned: " + err);    if (err==SUCCESS)    {	    err = performInstall(); 	    logComment("performInstall() returned: " + err);    }    else    {	    cancelInstall(err);	    logComment("cancelInstall() returned: " + err);    }}else    cancelInstall(INSUFFICIENT_DISK_SPACE);