// open all
function HideUnhide(whotohide){
	var whotohide_oject = document.getElementById(whotohide);
	 
	if (whotohide_oject.className == 'box_detail_hidden') whotohide_oject.className = 'box_detail';
	else whotohide_oject.className = 'box_detail_hidden';
}