What bunnyhopping method?

What method is used to bunnyhop in this hl2dq video? Autohotkey? Scripts?

Autohotkey, mostly.

Aah, ok. Thanks! Do you happen to have some good autohotkey script that you could share?

er…it is just above,look more carefully,please

http://z7.invisionfree.com/HL2DQ_Temp_Foru…=319&st=0&#last