Make an HTA file run as admin (elevated)

In wsf, vbs and js files you can easily find out if they run elevated and if not you can easily make them.
The code I've written for that is this:

EnsureElevatedPrivileges();
WScript.Echo("Running elevated now!");

function EnsureElevatedPrivileges() {
    if (!WScript.Arguments.Named.Exists("elevate")) {
        new ActiveXObject("Shell.Application").ShellExecute(WScript.FullName, "\"" + WScript.ScriptFullName + "\" /elevate", "", "runas", 1);
        WScript.Quit();
    }
}

But this doesn't work in HTA files because the global WScript variable doesn't exist there.
So how can I force a specific HTA file run (itself) as admin?

Solution

You can take a look at this : Procedure to run HTA elevated

<html> 
<head> 
<title>HTA Helpomatic</title> 

<HTA:APPLICATION 
     ID="oHTA" 
     APPLICATIONNAME="HTAHelpomatic" 
     SCROLL="yes" 
     SINGLEINSTANCE="yes" 
> 
<!-- ID="objHTAHelpomatic" --> 
<!-- WINDOWSTATE="maximize" --> 

</head> 

<SCRIPT Language="VBScript"> 

If HTAElevate() = True Then 
    CreateObject("WScript.Shell").Run "mmc.exe compmgmt.msc", , True 
    Call Main() 
End If 

Sub Main() 
    MsgBox "HTA-Ende", 4096 
End Sub 


'*** v13.3 *** www.dieseyer.de ***************************** 
Function HTAElevate() 
'*********************************************************** 
' Unter Windows x64 laufen VBS' nach einem Doppelklick in der x64-Umgebung 
' mit %WinDi%\System32\wscript.exe oder mit %WinDi%\System32\cscript.exe. 
' In der x64-Umgebung laufen VBS aber nicht (richtig). Die Prozedur 
' HTAElevate() erkennt dies und startet ggf. das VBS in der 

  Const Elev = " /elevated" 

' MsgBox oHTA.commandLine, , "5016 :: " 

' Trace32Log "5018 :: oHTA.commandLine: ==" & oHTA.commandLine & "==", 1 

  HTAElevate = True 

' If InStr( LCase( oHTA.commandLine ), Elev) > 0 then MsgBox oHTA.commandLine, , "5022 :: " 
  If InStr( LCase( oHTA.commandLine ), Elev) > 0 then Exit Function 


  On Error Resume Next 
    window.resizeto 750, 10 ' : window.moveto screen.width / 2, screen.height / 2 
  On Error GoTo 0 

' MsgBox oHTA.commandLine, , "5030 :: " 

  createobject("Shell.Application").ShellExecute "mshta.exe", oHTA.commandLine & Elev, "", "runas", 1 

  HTAElevate = False 

  self.close 

End Function ' HTAElevate() 


</SCRIPT> 
<body> 


</body> 
</html>