if (document.images) {       
            img01up = new Image();      
            img01up.src = "img/b_rip.gif"; 
            img02up = new Image();      
            img02up.src = "img/b_bbb.gif"; 
            img03up = new Image();      
            img03up.src = "img/b_asian.gif"; 
            img04up = new Image();      
            img04up.src = "img/b_kishidan.gif"; 
            img05up = new Image();      
            img05up.src = "img/b_yui.gif"; 
            img06up = new Image();
            img06up.src = "img/b_bump.gif"; 
            img07up = new Image();
            img07up.src = "img/b_girls.gif"; 
            img08up = new Image();
            img08up.src = "img/b_perfume.gif"; 
            img09up = new Image();
            img09up.src = "img/b_ouen.gif"; 
            img10up = new Image();
            img10up.src = "img/b_eiyu.gif"; 
            img11up = new Image();
            img11up.src = "img/b_web.gif"; 
            img12up = new Image();
            img12up.src = "img/b_meeting.gif"; 
            img13up = new Image();
            img13up.src = "img/b_rad.gif"; 
            img14up = new Image();
            img14up.src = "img/b_flumpool.gif"; 
            img15up = new Image();
            img15up.src = "img/b_miliyah.gif"; 
            img16up = new Image();
            img16up.src = "img/b_9mm.gif"; 
            img17up = new Image();
            img17up.src = "img/b_ara.gif"; 
            img18up = new Image();
            img18up.src = "img/b_sekaowa.gif"; 

            img01dn = new Image();      
            img01dn.src = "img/b_rip2.gif"; 
            img02dn = new Image();      
            img02dn.src = "img/b_bbb2.gif"; 
            img03dn = new Image();      
            img03dn.src = "img/b_asian2.gif"; 
            img04dn = new Image();      
            img04dn.src = "img/b_kishidan2.gif"; 
            img05dn = new Image();      
            img05dn.src = "img/b_yui2.gif"; 
            img06dn = new Image();
            img06dn.src = "img/b_bump2.gif"; 
            img07dn = new Image();
            img07dn.src = "img/b_girls2.gif"; 
            img08dn = new Image();
            img08dn.src = "img/b_perfume2.gif"; 
            img09dn = new Image();
            img09dn.src = "img/b_ouen2.gif"; 
            img10dn = new Image();
            img10dn.src = "img/b_eiyu2.gif"; 
            img11dn = new Image();
            img11dn.src = "img/b_web2.gif"; 
            img12dn = new Image();
            img12dn.src = "img/b_meeting2.gif"; 
            img13dn = new Image();
            img13dn.src = "img/b_rad2.gif"; 
            img14dn = new Image();
            img14dn.src = "img/b_flumpool2.gif"; 
            img15dn = new Image();
            img15dn.src = "img/b_miliyah2.gif"; 
            img16dn = new Image();
            img16dn.src = "img/b_9mm2.gif"; 
            img17dn = new Image();
            img17dn.src = "img/b_ara2.gif"; 
            img18dn = new Image();
            img18dn.src = "img/b_sekaowa2.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 ripMouseOver(){
        imgOn('img01');
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

function ouenMouseOver(){
        imgOn('img09');
}

function ouenMouseOut(){
        imgOff('img09');
}

function eiyuMouseOver(){
        imgOn('img10');
}

function eiyuMouseOut(){
        imgOff('img10');
}

function webMouseOver(){
        imgOn('img11');
}

function webMouseOut(){
        imgOff('img11');
}

function meetingMouseOver(){
        imgOn('img12');
}

function meetingMouseOut(){
        imgOff('img12');
}

function radMouseOver(){
        imgOn('img13');
}

function radMouseOut(){
        imgOff('img13');
}

function flumpoolMouseOver(){
        imgOn('img14');
}

function flumpoolMouseOut(){
        imgOff('img14');
}

function miliyahMouseOver(){
        imgOn('img15');
}

function miliyahMouseOut(){
        imgOff('img15');
}

function mmMouseOver(){
        imgOn('img16');
}

function mmMouseOut(){
        imgOff('img16');
}

function araMouseOver(){
        imgOn('img17');
}

function araMouseOut(){
        imgOff('img17');
}

function sekaowaMouseOver(){
        imgOn('img18');
}

function sekaowaMouseOut(){
        imgOff('img18');
}