function toggleStaffMode(thePlayer)
    if (getPlayerAccount(thePlayer)) then
        local accName = getAccountName ( getPlayerAccount ( thePlayer ) )
            if isObjectInACLGroup ("user."..accName, aclGetGroup ( "Admin" ) ) then
            if (getElementData(thePlayer,"invincible")) then
                    setElementData(thePlayer,"invincible",false)
                    outputChatBox("Staff Mode is now off.",thePlayer,255,255,255)
            else
                setElementData(thePlayer,"invincible",true)
                    outputChatBox("Staff Mode is now on.",thePlayer,255,255,255)
                end
        end
    end
end
addCommandHandler("gostaff",toggleStaffMode)