Event.observe(window, 'load', init_gym_fighters);
Event.observe(window, 'load', init_gym_trainers);

function init_gym_fighters ()
{
    response = new Ajax.Updater('gym_fighter_list', '/load.php', 
								{ evalJSON: true, sanitizeJSON: true, 
								  parameters: 
 							      { method: 'load_gym_fighters', 
								    gym_id: id_to_edit } });
}

function init_gym_trainers ()
{
    response = new Ajax.Updater('gym_trainer_list', '/load.php', 
								{ evalJSON: true, sanitizeJSON: true, 
								  parameters: 
 							      { method: 'load_gym_trainers', 
								    gym_id: id_to_edit } });
}