arachna's -hotkeying autocast

Normally people hotkey the different spells they have for a hero. I understand that if you right click on Arachna's webbed shot that it will be set on autocast. Can you "hotkey" a right click on a spell as in this case so that I'll have a hotkey to turn autocast on and off?

[Azgalor]

There is a mod that does this.

http://forums.heroesofnewerth.com/showthread.php?t=21921&highlight=arachna

great, thanks Azgalor...much appreciated

[HeavySoul]

Not a good solution. This just turns off single cast - critical for harassing in early game as it doesn't draw creep aggro.