透出浏览器的浮动图片代码

<script>
    var imagepath = "../images/temp_img.gif"; //图片地址 
    var imagewidth = 163; //这两行写图片的大小
    var imageheight = 60;
    var speed = 3;
    var imageclick = "/bbs/index.asp"; //这里写点击图片连接到的地址
    var hideafter = 0;
    var isie = 0;
    if (window.navigator.appName == "Microsoft Internet Explorer" && window.navigator.appVersion.substring(window.navigator.appVersion.indexOf("MSIE") + 5, window.navigator.appVersion.indexOf("MSIE") + 8) >= 5.5) {
        isie = 1;
    } else {
        isie = 0;
    }
    if (isie) {
        var preloadit = new Image();
        preloadit.src = imagepath;
    }

    function pop() {
        if (isie) {
            x = x + dx;
            y = y + dy;
            oPopup.show(x, y, imagewidth, imageheight);
            if (x + imagewidth + 5 > screen.width) dx = -dx;
            if (y + imageheight + 5 > screen.height) dy = -dy;
            if (x < 0) dx = -dx;
            if (y < 0) dy = -dy;
            startani = setTimeout("pop();", 50);
        }
    }

    function
    dismisspopup() {
        clearTimeout(startani);
		oPopup.hide();
    }

    function dowhat() {
        if (imageclick == "dismiss") dismisspopup()
        else window.open(imageclick);
    }
    if (isie) {
        var x = 0,
            y = 0,
            dx = speed,
            dy = speed;
        var oPopup = w;
		indow.createPopup();
        var oPopupBody = oPopup.document.body;
        oPopupBody.style.cursor = "hand"
        oPopupBody.innerHTML = '<IMG SRC="' + preloadit.src + '">';
        oPopup.document.body.onmouseover = new Function("clearTimeout(startani)");
        oPopup.document.body.onmouseout = pop;
        oPopup.document.body.onclick = dowhat;
        pop();
        if (hideafter > 0) setTimeout("dismisspopup()", hideafter * 1000)
    }
</script>