Add this to userconfig.cfg..
NOTE: Duck before you press the script key!

My LJ rec with this scrip:
Distance: 242.143225 MaxSpeed: 322.224566 PreStrafe: 274.3563470 Strafes: 20 Sync: 34

Код:
alias pgs "+left; +forward"
alias pgs2 "+right; +back"
alias pgs4 "-left; -forward"
alias pgs6 "-right; -back"
alias pgs1 "+left; +forward"
alias pgs3 "+right; +back"
alias pgs5 "-left; -forward"
alias pgs7 "-right; -back"
alias pgsy "cl_yawspeed 210"
alias pgson "pgs; wait; pgs4; wait; pgs2; wait; pgsy; wait; pgs6; wait; pgs1; wait; pgs5; wait; pgs3; wait; pgsy; wait; pgs7"
alias pgsidestrafe "pgson; wait; pgson; wait; pgson; wait; pgson; wait; pgson"
bind mouse3 "pgsidestrafe"