//記事を折りたたむ
function expand(URI,SUB,EXP){
	if(document.getElementById) {
		if(document.getElementById(SUB).style.display) {
			if(URI != 0) {
				document.getElementById(SUB).style.display = "block";
				document.getElementById(EXP).style.display = "none";
			} else {
				document.getElementById(SUB).style.display = "none";
				document.getElementById(EXP).style.display = "block";
			}
		} else {
			location.href = URI;
			return true;
		}
	} else {
		location.href = URI;
		return true;
	}
}