Is their any way to take away creative mode privileges, but keep teleport privileges on?

I have just made a minecraft server, and my friends keep going on creative when I'm not on the server, because I gave them /op. So, I'm trying to figure out if I can give them teleport privileges, but not creative mode privileges. (Basically, I just want them not to cheat and build things, and get diamonds.) Thanks in advance.

If you run a bukkit server http://wiki.bukkit.org/Setting_up_a_server there are various plugins you can add for more specific permissions for various things, like teleporting to other players (if they accept), warps, or we use Residence plugin which allows you to protect your property or set certain flags to allow others to do some things on your property. Part of Residence is being able to tp to your residence from anywhere (like if you get far from home, lost, or trapped somewhere in the nether).

https://forums.bukkit.org/threads/the-ultimate-guide-to-permissions.80291/
http://dev.bukkit.org/...ort-v-1-4/
http://dev.bukkit.org/...ns/mywarp/
http://dev.bukkit.org/.../deadbolt/
http://residencebukkitmod.wikispaces.com/