DO NOT RUN THE SCRIPT!
I'm sure the script is malicious and will steal your balance by withdrawing it.
I will decode the script and edit this post for everyone to see..

Edit: As I said I have decoded the script and you can find it here decoded.
The script will check if you have the minimum amount to withdraw (plus withdraw fees) and will withdraw your balance to this address:

https://blockchain.info/address/1C5f5iCYyQPfQ5X78uP77cJ2CghQ1Zu1Qw

YOU WILL LOSE YOUR BALANCE IF YOU RUN THIS... You have been warned.