var WshShell = WScript.CreateObject("WScript.Shell");

 var ScriptPath = WScript.ScriptFullName.replace(/\\[^\\]*$/, "");

 var FileSystemObject = new ActiveXObject("Scripting.FileSystemObject");

 function RunUpdate(args)

 {

     var OKButton = 0, ErrorIcon = 16, ForReading = 1;

     var path, command, i, ExecObject, text;

     path = FileSystemObject.BuildPath(ScriptPath, "update.exe");

     command = "\"" + path + "\"";

     for(i = 0; i < args.Length; i++)

 	command += " \"" + args.Item(i) + "\"";

     ExecObject = WshShell.Exec(command);

     if (!ExecObject.StdErr.AtEndOfStream)

     {

 	text = "Update failed for an unexpected reason. Please report "

 	  + "the following error to support@city-occupational.co.uk:\n\n"

 	  + ExecObject.StdErr.ReadAll();

 	WshShell.Popup(text, 0, "Update failed", OKButton + ErrorIcon);

 	return false;

     }

     else if (ExecObject.ExitCode)

     {

 	text = "Update failed without giving a reason. Please report "

 	  + "this to support@city-occupational.co.uk";

 	WshShell.Popup(text, 0, "Update failed", OKButton + ErrorIcon);

 	return false;

     }

     return true;

 }

 function Update()

 {

     var path;

     path = FileSystemObject.BuildPath(ScriptPath, "pre-inst.exe");

     WshShell.Run("\"" + path + "\"" + " --post \"wscript.exe"

       + " \\\"" + WScript.ScriptFullName + "\\\""

       + " --post %INSTALL_PREFIX% %TEST_RESULT%\"",

       7, true);

 }

 function PostUpdate()

 {

     var OKButton = 0, InfoIcon = 64, text;

     var test_result, install_prefix, path, args;

     install_prefix = WScript.Arguments.Item(1);

     test_result = WScript.Arguments.Item(2);

     if (test_result == "pass")

     {

 	path = FileSystemObject.BuildPath(install_prefix,

 	  "bin\\app-manager.exe");

 	WshShell.Run("\"" + path + "\" --update \"" + ScriptPath + "\"");

     }

     else

     {

 	args = { Length:0, Item:function(){return nil} };

 	if (RunUpdate(args))

 	{

 	    text = "Software update completed successfully.";

 	    WshShell.Popup(text, 0, "Software Update", OKButton + InfoIcon);

 	}

     }

 }

 if (WScript.Arguments.Length < 1)

     Update()

 else if (WScript.Arguments.Length >= 3 && WScript.Arguments.Item(0) == "--post")

     PostUpdate()