if (document.images) {
            img00up = new Image();
            img00up.src = "http://www.papawash.co.jp/img/ess.gif"; 
            img01up = new Image();
            img01up.src = "http://www.papawash.co.jp/img/m_kirei.gif"; 
            img02up = new Image();
            img02up.src = "http://www.papawash.co.jp/img/m_mail.gif"; 
            img03up = new Image();
            img03up.src = "http://www.papawash.co.jp/img/m_blog.gif"; 
            img04up = new Image();
            img04up.src = "http://www.papawash.co.jp/img/m_shop.gif"; 
            img05up = new Image();
            img05up.src = "http://www.papawash.co.jp/img/m_kago.gif"; 
            img06up = new Image();
            img06up.src = "http://www.papawash.co.jp/img/m_login.gif"; 
            img07up = new Image();
            img07up.src = "http://www.papawash.co.jp/img/m_noorder.gif"; 
            img08up = new Image();
            img08up.src = "http://www.papawash.co.jp/img/b_netpre.gif"; 

            img00dn = new Image();
            img00dn.src = "http://www.papawash.co.jp/img/ess2.gif"; 
            img01dn = new Image();
            img01dn.src = "http://www.papawash.co.jp/img/m_kirei2.gif"; 
            img02dn = new Image();
            img02dn.src = "http://www.papawash.co.jp/img/m_mail2.gif"; 
            img03dn = new Image();
            img03dn.src = "http://www.papawash.co.jp/img/m_blog2.gif"; 
            img04dn = new Image();
            img04dn.src = "http://www.papawash.co.jp/img/m_shop2.gif"; 
            img05dn = new Image();
            img05dn.src = "http://www.papawash.co.jp/img/m_kago2.gif"; 
            img06dn = new Image();
            img06dn.src = "http://www.papawash.co.jp/img/m_login2.gif"; 
            img07dn = new Image();
            img07dn.src = "http://www.papawash.co.jp/img/m_noorder2.gif"; 
            img08dn = new Image();
            img08dn.src = "http://www.papawash.co.jp/img/b_netpre2.gif"; 
        }



// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "dn.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "up.src");
        }
}

function essMouseOver(){
        imgOn('img00');
}

function essMouseOut(){
        imgOff('img00');
}

function kireiMouseOver(){
        imgOn('img01');
}

function kireiMouseOut(){
        imgOff('img01');
}

function mailMouseOver(){
        imgOn('img02');
}

function mailMouseOut(){
        imgOff('img02');
}

function blogMouseOver(){
        imgOn('img03');
}

function blogMouseOut(){
        imgOff('img03');
}

function shopMouseOver(){
        imgOn('img04');
}

function shopMouseOut(){
        imgOff('img04');
}

function orderMouseOver(){
        imgOn('img05');
}

function orderMouseOut(){
        imgOff('img05');
}

function loginMouseOver(){
        imgOn('img06');
}

function loginMouseOut(){
        imgOff('img06');
}

function noorderMouseOver(){
        imgOn('img07');
}

function noorderMouseOut(){
        imgOff('img07');
}

function presentMouseOver(){
        imgOn('img08');
}

function presentMouseOut(){
        imgOff('img08');
}