function oritatami(id,id2){
	obj=(document.all)?document.all(id):((document.getElementById)?document.getElementById(id):null);
	if(obj)	obj.style.display=(obj.style.display=="none")?"block":"none";
	if(document.all){
		with(document.all(id2)){innerText=(innerText=="+")?" ":" ";}
	}
	else if(document.getElementById){
		with(document.getElementById(id2)){firstChild.nodeValue=(firstChild.nodeValue=="+")?" ":" ";}
	}
}