title: =MATCH() returns wrong value
body: <p>Why doesn't <a href="https://docs.google.com/spreadsheet/ccc?key=0AiNJOiic9NfFdG9GeXM4S21iWWp0MU9pMWtucUpMQ3c" rel="nofollow">this</a> work? I have the share of votes of different Finnish parties in the City of Jyväskylä in every region. </p>
  
  <p>Every row shows one region, every column has the share of votes of every party. I'd like to add a column where Google Spreadsheet would find out which column has the maximum value on that particular row and then return the text on the header row of that column.</p>
  
  <p>In other words I'd want to add "The biggest party column" that would show which party got the biggest share of votes in every region.</p>
  
  <p>I think that should be possible using =max()-function to find out the maximum value, then using =match() function to give the column index number of the cell that has the biggest value on row and finally use =index()-function to return the party's name from header row. </p>
  
  <p>Any ideas what I'm doing wrong?</p>