This alias uses the up and down arrows to cycle weapons.  It looks really
complicated, but it's really not :)

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alias ch1 "alias weapon use Blaster;weapon;bind uparrow ch2;bind downarrow chx;echo Switching to... Blaster"
alias ch2 "alias weapon use Shotgun;weapon;bind uparrow ch3;bind downarrow ch1;echo Switching to... Shotgun"
alias ch3 "alias weapon use Super Shotgun;weapon;bind uparrow ch4;bind downarrow ch2;echo Switching to... Super Shotgun"
alias ch4 "alias weapon use Machinegun;weapon;bind uparrow ch5;bind downarrow ch3;echo Switching to... Machinegun"
alias ch5 "alias weapon use Chaingun;weapon;bind uparrow ch6;bind downarrow ch4;echo Switching to... Chaingun"
alias ch6 "alias weapon use Grenade Launcher;weapon;bind uparrow ch7;bind downarrow ch5;echo Switching to... Grenade Launcher"
alias ch7 "alias weapon use Rocket Launcher;weapon;bind uparrow ch8;bind downarrow ch6;echo Switching to... Rocket Launcher"
alias ch8 "alias weapon use HyperBlaster;weapon;bind uparrow ch9;bind downarrow ch7;echo Switching to... Hyperblaster"
alias ch9 "alias weapon use Railgun;weapon;bind uparrow chx;bind downarrow ch8;echo Switching to... Railgun"
alias chx "alias weapon use BFG10K;weapon;bind uparrow ch1;bind downarrow ch9;echo Switching to... BFG"
bind 1 "ch1"
bind 2 "ch2"
bind 3 "ch3"
bind 4 "ch4"
bind 5 "ch5"
bind 6 "ch6"
bind 7 "ch7"
bind 8 "ch8"
bind 9 "ch9"
bind 0 "chx"
ch1