this is nice... however theres a problem especially when the param are not specified(null) like this example:
--> $switchtok(Testing this bodacious alias is sweet,3,,32)
or when the N or N2 specified as 0
--> $switchtok(Testing this bodacious alias is sweet,3,0,32)
just wanna shared with you :)
http://www.hawkee.com/snippet/1313/