var sHankakuSuuji = '0123456789';
var sHankakuAlphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		staff_loginbottan_over = newImage("/img/header/rnav_b_login_on.gif");
		button_home_over = newImage("/img/header/button_home-over.jpg");
		button_about_bottan_home_over = newImage("/img/header/button_about-button_home_ov.jpg");
		bottan_about_over = newImage("/img/header/button_work--button_about_o.jpg");
		bottan_work__bottan_about_over = newImage("/img/header/button_work--button_about_o.jpg");
		bottan_work__over = newImage("/img/header/button_work--over.jpg");
		bottan_toiawase_over = newImage("/img/header/button_toiawase-over.jpg");
		sinki_over = newImage("/img/menuleft/sinki-over.gif");
		hajimetenokatahe_jobsize_over = newImage("/img/menuleft/hajimetenokatahe_jobsize-ov.gif");
		hajimetenokatahe_access_over = newImage("/img/menuleft/hajimetenokatahe_access-ove.gif");
		hajimetenokatahe_friend_over = newImage("/img/menuleft/hajimetenokatahe_friend-ove.gif");
		hajimetenokatahe_favorit_over = newImage("/img/menuleft/hajimetenokatahe_favorit-ov.gif");
		hajimetenokatahe_mobile_over = newImage("/img/menuleft/hajimetenokatahe_mobile-haj.gif");
		text02_over = newImage("/img/jobdescript/jobtext02-over.jpg");
		text02_actv = newImage("/img/jobdescript/jobtext02.jpg");
		text03_over = newImage("/img/jobdescript/jobtext03-over.jpg");
		text03_actv = newImage("/img/jobdescript/jobtext03.jpg");
		text04_over = newImage("/img/jobdescript/jobtext04-over.jpg");
		text04_actv = newImage("/img/jobdescript/jobtext04.jpg");
		text05_over = newImage("/img/jobdescript/jobtext05-over.jpg");
		text05_actv = newImage("/img/jobdescript/jobtext05.jpg");
		text06_over = newImage("/img/jobdescript/jobtext06-over.jpg");
		text06_actv = newImage("/img/jobdescript/jobtext06.jpg");
		text07_over = newImage("/img/jobdescript/jobtext07-over.jpg");
		text07_actv = newImage("/img/jobdescript/jobtext07.jpg");
		preloadFlag = true;
	}
}

function MM_openBrWindow(theURL,winName,features) {
	window.open(theURL,winName,features);
}

function fncYear() {
	nowD = new Date();
	nowY = nowD.getFullYear();
	return nowY;
}

function isHiragana(s) {
	if (s.match(/^[\u3040-\u309F]+$/)) {
		return true;
	} else {
		return false;
	}
}

function isZip(n1,n2) {
	if (n1.match(/^\d\d\d$/) && n2.match(/^\d\d\d\d$/)) {
		return true;
	} else {
		return false;
	}
}

function isValidTel(n1) {
	if ((n1.match(/^0([\d\-]){1,20}$/))) {
		return true;
	}

    return false;
}
function isMail(s) {
	if (!(s.match(/^([a-z0-9_]|\-|\.)+@(([a-z0-9_]|\-)+\.)+[a-z]{2,4}$/i))) {
		return false;
	}

    return true;
}

function isMailAddress(s){
	var sMailAddress = sHankakuSuuji + sHankakuAlphabet + '@.-_';
	var i;

	for (i = 0 ; i < s.length ; i ++) {
		if (sMailAddress.indexOf(s.charAt(i), 0) == -1) {
			return false;
		}
	}

	i = s.indexOf('@', 0);
	if (i == -1) {
		return false;
	}
	if (s.indexOf('@', i + 1) != -1) {
		return false;
	}

	j = 0;
	while (s.indexOf('.', j + 1) != -1) {
		j = s.indexOf('.', j + 1);
	}

	if (i > j) {
		return false;
	}

	return true;
}