var revert = new Array();
var inames = new Array(
'icon_vs_matches.jpg',
'icon_walkthroughs.jpg',
'icon_speed_runs.jpg',
'icon_misc_videos.jpg',
'icon_download', 
'icon_youtube', 
'icon_forums', 
'icon_volume1', 
'icon_volume2', 
'icon_volume3', 
'icon_volume4', 
'icon_volume5', 
'icon_volume6', 
'icon_volume7', 
'icon_volume8', 
'icon_volume9', 
'icon_volume10', 
'icon_volume11', 
'icon_volume12', 
'icon_volume13', 
'icon_volume14', 
'icon_volume15');

// Preload
if (document.images) {
  var flipped = new Array(
'icon_vs_matches-b.jpg',
'icon_walkthroughs-b.jpg',
'icon_speed_runs-b.jpg',
'icon_misc_videos-b.jpg',
'icon_download-b', 
'icon_youtube-b', 
'icon_forums-b', 
'icon_volume1b', 
'icon_volume2b', 
'icon_volume3b', 
'icon_volume4b', 
'icon_volume5b', 
'icon_volume6b', 
'icon_volume7b', 
'icon_volume8b', 
'icon_volume9b', 
'icon_volume10b', 
'icon_volume11b', 
'icon_volume12b', 
'icon_volume13b', 
'icon_volume14b', 
'icon_volume15b');
  for(i=0; i< inames.length; i++) {
    flipped[i] = new Image();
    flipped[i].src = "images/"+inames[i]+"-b.jpg";
  }
}

function over(num) {
  if(document.images) {
    revert[num] = document.images[inames[num]].src;
    document.images[inames[num]].src = flipped[num].src;
  }
}
function out(num) {
  if(document.images) document.images[inames[num]].src = revert[num];
}