Powershell LastLoginTimeStampForUser

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#Powershell 2,3
#Script to find the last login time of a user by comparing last login times
#     recorded on each domain controler and selecting the last one.
#
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#     by: ki01s
#     Date: 7/3/13
#
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#Import the module to access Active Directory
Import-Module ActiveDirectory

#ask for a username to look up
$LoginName = Read-Host "What user would you like to look up?"

#Create function to use in other scripts
function Get-ADUserLastLogon([string]$userName)
{

 #get full list of domain controllers in current domain
  $dcs = Get-ADDomainController -Filter {Name -like "*"}
  $time = 0

 #Query each domain controler to find the last date and time user logged in.
  foreach($dc in $dcs)
  {

    $hostname = $dc.HostName
    $user = Get-ADUser $userName | Get-ADObject -Properties lastLogon

    #compare times from each DC to determine last login time
    if($user.LastLogon -gt $time)
    {
      $time = $user.LastLogon
    }
  }
  $dt = [DateTime]::FromFileTime($time)

  #display the name and time of last login.
  Write-Host $username "last logged on at:" $dt }

Get-ADUserLastLogon -UserName $LoginName
##Unhash the two lines below, if running script from command line to pause script and wait for keypress before closing window.
#Write-Host "Press any key to continue ..."
#$x = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")