Help! 10 points for whoever can help me fix my dryer!! It stopped heating the clothes but it is still spinning

Help! 10 points for whoever can help me fix my dryer!! It stopped heating the clothes but it is still spinning and putting air into the dryer and I've cleaned the lint trap. I'll turn it on and come back to it a while later and it will still be on the same spot on the time dial like it would have been if I had just turned it on. Its driving me nuts and I don't know what could be wrong. Its a little over a year old and is made by Whirlpool only under a different name (Roper).