function WriteLog(
	[string] $Message=$(throw '$message is required'))
{
	#Example WriteLog("OMG Blah blah blah")
	$DateStamp = Get-Date -format yyyyMdd
	$Username=$env:USERNAME
	$logfile= $LogDir + $DateStamp + "_BlahScript_Log.txt"
	"$(Get-date) $Username $Message "| Out-File -Append -FilePath $logfile
}