function ChangeContentsYear( targetDir ) {
	var op = document.formSelectYear.year.selectedIndex;
	var opValue = document.formSelectYear.year.options[op].value;
	if( op != 0 ){
		if( op == 1 ){
			location.href = "/" + targetDir + "/";
		}
		else{
			location.href = "/" + targetDir + "/index_" + opValue + ".html";
		}
	}
}

function ChangeContentsURL() {
	var op = document.formSelectURL.url.selectedIndex;
	var opValue = document.formSelectURL.url.options[op].value;
	if( op != 0 ){
		location.href = opValue;
	}
}