paste this between of the old function.
PHP Code:
def OtevritWeb(self):
import net
if self.Horse== FALSE:
net.SendChatPacket("/horse_unsummon")
self.Horse= 1 #la potenza di py 2.2
else:
net.SendChatPacket("/horse_summon")
self.Horse= FALSE
self.Horse = None
Good evening.