if (navigator.appVersion > "3") {
    img0 = new Image(); img0.src = 'img/gaiyou.gif';
    img1 = new Image(); img1.src = 'img/gaiyou2.gif';
    img2 = new Image(); img2.src = 'img/support.gif';
    img3 = new Image(); img3.src = 'img/support2.gif';
    img4 = new Image(); img4.src = 'img/stuff.gif';
    img5 = new Image(); img5.src = 'img/stuff2.gif';}
function imgChange(imgName,imgNum) {
    if (navigator.appVersion > "3") {
        document.images[imgName].src = eval(imgNum + '.src');
    }
}