if (navigator.appVersion > "3") {
    img0 = new Image(); img0.src = 'img/nav/header_btn00o.gif';
    img1 = new Image(); img1.src = 'img/nav/header_btn00.gif';
    img2 = new Image(); img2.src = 'img/nav/header_btn01o.gif';
    img3 = new Image(); img3.src = 'img/nav/header_btn01.gif';
    img4 = new Image(); img4.src = 'img/nav/header_btn02o.gif';
    img5 = new Image(); img5.src = 'img/nav/header_btn02.gif';
    img6 = new Image(); img6.src = 'img/nav/header_btn03o.gif';
    img7 = new Image(); img7.src = 'img/nav/header_btn03.gif';
    img8 = new Image(); img8.src = 'img/nav/header_btn04o.gif';
    img9 = new Image(); img9.src = 'img/nav/header_btn04.gif';
    img10 = new Image(); img10.src = 'img/nav/header_btn05o.gif';
    img11 = new Image(); img11.src = 'img/nav/header_btn05.gif';
    img12 = new Image(); img12.src = 'img/nav/header_btn06o.gif';
    img13 = new Image(); img13.src = 'img/nav/header_btn06.gif';
    img14 = new Image(); img14.src = 'img/nav/lang_btn_eno.gif';
    img15 = new Image(); img15.src = 'img/nav/lang_btn_en.gif';
    img16 = new Image(); img16.src = 'img/top_btn01o.jpg';
    img17 = new Image(); img17.src = 'img/top_btn01.jpg';
    img18 = new Image(); img18.src = 'img/top_btn02o.jpg';
    img19 = new Image(); img19.src = 'img/top_btn02.jpg';
    img20 = new Image(); img20.src = 'img/top_btn03o.jpg';
    img21 = new Image(); img21.src = 'img/top_btn03.jpg';
    img22 = new Image(); img22.src = 'img/top_btn04o.jpg';
    img23 = new Image(); img23.src = 'img/top_btn04.jpg';
}
function imgchange(imgName,imgNum) {
    if (navigator.appVersion > "3") {
        document.images[imgName].src = eval(imgNum + '.src');
    }
}