function showCat(id,user,username) {
	var loading = document.getElementById("achievement_body");
	loading.innerHTML = '<center><img src=http://images.subeta.net/icons/loading.gif></center>';
	new Ajax.Updater("achievement_body","/achievements_process.php", {method:"post", postBody:"act=show_cat&id=" + id + "&userid=" + user + "&username=" + username, onComplete: function() { Subeta.Page.balancer();}});
}