/************************************************************/
/* 文字サイズ変更                                           */
/************************************************************/
$(function () {
    var currentstyle = readCookie('fontStyle');
    if (currentstyle) {
        switchFont(currentstyle);
    };
    $("li.sizeL").click(function () {
        switchFont("fontL");
        return false;
    });
    $("li.sizeM").click(function () {
        switchFont("fontM");
        return false;
    });
    $("li.sizeS").click(function () {
        switchFont("fontS");
        return false;
    });
});

function switchFont(className) {
    $("body").removeAttr("class").addClass(className);
    createCookie('fontStyle', className, 365);
};


/************************************************************/
/* クッキー設定                                             */
/************************************************************/

function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}