How long...?

im going to fry some chicken n i would like some advicde on how long to fry it for. i usually bread it n then fry it a few minutes then take it out n cut the center n check it (its never completely done) then fry it a few more minutes then take it out n check it again (still not done) i end up checking it about 3-4 times before it is completely done. i would like to just be able to throw it in there n let it cook till it is completely done. i only want to have to check it once n see it is done. can someone tell me about how long to fry it for? im using average size boneless skinless chicken n i cut each one into 4 peices. i cook about 4-6 little peices at a time. any one have n e advice?