// Language switch

function switchJaToEn() {
	var myAdd = document.location.href;
	var lastCha = myAdd.charAt(myAdd.length-1);
	if (lastCha == "/") {
		myAdd = myAdd + "index-en.html";
		document.location.href = myAdd;
	} else if (lastCha == "l") {
		myAdd = myAdd.replace(".html", "-en.html");
		document.location.href = myAdd;
	}
}

function switchEnToJa() {
	var myAdd = document.location.href;
	myAdd = myAdd.replace("-en.html", ".html");
	document.location.href = myAdd;
}