可关闭的飘窗代码：

    
关闭
    

<ｓｃｒｉｐｔ type="text/javascript">    var img = document.getElementById('FlAD');    var xPos = 200;    var yPos = 200;    var step = 1;    var delay = 40;    var height = 0;    var Hoffset = 0;    var Woffset = 0;    var yon = 0;    var xon = 0;    var pause = true;    var interval;    img.style.top = yPos;    function changePos() {        width = document.documentElement.clientWidth || document.body.clientWidth;        height = document.documentElement.clientHeight || document.body.clientHeight;        scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;        scrollTop = document.documentElement.scrollLeft || document.body.scrollTop;        Hoffset = img.offsetHeight;        Woffset = img.offsetWidth;        img.style.left = xPos + scrollLeft +'px';        img.style.top = yPos + scrollTop +'px';        if (yon) {            yPos = yPos + step;        } else {            yPos = yPos - step;        }        if (yPos < 0) {            yon = 1;            yPos = 0;        }        if (yPos >= (height - Hoffset)) {            yon = 0;            yPos = (height - Hoffset);        }        if (xon) {            xPos = xPos + step;        } else {            xPos = xPos - step;        }        if (xPos < 0) {            xon = 1;            xPos = 0;        }        if (xPos >= (width - Woffset)) {            xon = 0;            xPos = (width - Woffset);        }    }    function start() {        img.visibility = "visible";        interval = setInterval('changePos()', delay);    }    start();