PowerShell Code Tidy or Reformat?

Possible Duplicate:
Is there a PowerShell code formatter / pretty printer?

Does anyone know of a tool that you can use to re-format/tidy Powershell code:-

Eg:-

if ($c -eq "Cat") 
{
$a="Bubble" 
}
else
{
$a="Trouble"
}
Write-Host $a

To:-

if ($c -eq "Cat") 
{
    $a="Bubble" 
}
else
{
    $a="Trouble"
}
Write-Host $a

ie, tabbing If Statements etc, I know they was tools to do it with VB but I haven't seen any for Powershell yet?