function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}
	function FormCheck() {
		var f0 = document.forms[0];

		if (f0.email.value == "") {
			alert("メールアドレスを入力してください。");
			f0.email.focus();
			return false;
		}
		if (f0.email2.value == "") {
			alert("確認用メールアドレスを入力してください。");
			f0.email2.focus();
			return false;
		}
		if (f0.email2.value != f0.email.value) {
			alert("E-mailとE-mail確認用のアドレスが違います。");
			f0.email2.focus();
			return false;
		}

		return true;
	}