its definetly the starter

 

HEY everyone it was the battery so far...i just put a new one in and it started right up however i will find out if it is the starting system if the alternator doesn't charge the battery back up. thanks everyone for the replies the helped out alot. now i have a new problem and thats the brakes. i just spent about $300 last month on brakes on my stang. well after putting all the brakes on including everything from wheel cylinders to the actual drums i bled the brakes to get all the air out of lines and then for about a week the brakes were fine, however when i was just driving it the pedal all the sudden went all the way down to the floor and i had no brakes what so ever. i figured that air got back into the lines so i checked all the wheel cylinder connects and nothing was leaking ..what could it be? what do i do?