AppleScript Buka tab Terminal Baru

tell application "Terminal"
    activate
    do script "ping google.com" in front window
    my makeTab()
    do script "ping yahoo.com" in front window
    my makeTab()
    do script "ping msn.com" in front window
end tell

on makeTab()
    tell application "System Events" to keystroke "t" using {command down}
    delay 0.2
end makeTab
qpwo