[jQuery] Autocomplete: different name for "q"? is this possible?

Hello,
Thanks for the cool plugin, it's very useful!
I plugged in Autocomplete in my application. I'm using a query
variable "q" throughout my application. Now i seem to be having a
conflict with the Autocomplete query variable being named "q" too. Can
i change this somewhere? For instance to "ac"...
Best,
Toon Severijns