Samsung Galaxy s7582

[AC Question]

Hello i have a samsung galaxy s7582 i had rooted it some days ago & it was working very good actually i had rooted it thru odin & not cwm recovery & now for installing a custom ROM on it i wanted to install CWM & hence for that i downloaded ROM manager & there i did not get my mobile model no. so i downloaded a tar file from internet & from odin i was installing it & after that the mobile did not start it & now the prob is that my mob is stuck on samsung logo that is in the starting itself pls. help me i don't no what to do? & it even shows a red exclamation mark on the left top of the screen with the samsung logo & it gets stuck over there & does not move at all. & it does not start at all please help me guys plz.... :-(