$(document).ready(function() {
   $('#qt_player').click(
      function() {
         imagename = $(this).attr("src");
         imagenamelength = imagename.length;
         if(imagename.substr(imagenamelength-7, 7) == 'set.gif') {
            newname = imagename.substr(0, imagenamelength-7) + 'act.gif';
         }
         $(this).attr({ src: newname });
         $('#wm_player').attr({ src: 'lib/images/player_wm_set.gif' });
         $('#fl_player').attr({ src: 'lib/images/player_fl_set.gif' });
      }
   );
   $('#wm_player').click(
      function() {
         imagename = $(this).attr("src");
         imagenamelength = imagename.length;
         if(imagename.substr(imagenamelength-7, 7) == 'set.gif') {
            newname = imagename.substr(0, imagenamelength-7) + 'act.gif';
         }
         $(this).attr({ src: newname });
         $('#qt_player').attr({ src: 'lib/images/player_qt_set.gif' });
         $('#fl_player').attr({ src: 'lib/images/player_fl_set.gif' });
      }
   );
   $('#fl_player').click(
      function() {
         imagename = $(this).attr("src");
         imagenamelength = imagename.length;
         if(imagename.substr(imagenamelength-7, 7) == 'set.gif') {
            newname = imagename.substr(0, imagenamelength-7) + 'act.gif';
         }
         $(this).attr({ src: newname });
         $('#qt_player').attr({ src: 'lib/images/player_qt_set.gif' });
         $('#wm_player').attr({ src: 'lib/images/player_wm_set.gif' });
      }
   );
});