function initMenu(bodyid){
	changeDisp(bodyid + '_2');
}
function changeDisp(id){
	var disp = document.getElementById(id).style.display;
	var expimg = document.getElementById('exp_' + id);
	if(disp == "block"){
		document.getElementById(id).style.display = "none";
		expimg.src = expimg.src.replace('open','close');
	}else{
		document.getElementById(id).style.display = "block";
		expimg.src = expimg.src.replace('close','open');
	}
	return false;
}