function showsub_aa(id){
	for (i = 0;i<5;i++){
		document.getElementById("ttab_a"+i).className = "menu_bj_04";
		document.getElementById("ssub_a"+i).style.display = "none";
	}
		document.getElementById("ttab_a"+id).className = "menu_bj_03";
		document.getElementById("ssub_a"+id).style.display = "";
}