is it possible to fix my ds lite?

hi, my daughter spilt her milk on my ds, it worked for little while after then it started to turn itself off after a minute or so, i tried charging it as i thought it might of been the battery, then i took the battery out and left the ds on the radiator over night and now it wont turn on. can it be fixed or is it worth it? how much would it roughly cost?

kate
January 2009