网页浮动图片代码

<div id="flash">
    <script type="text/javascript">
        var widths = 865;
        /*显示高度,自行调整*/
        var heights = 255;
        /*显示宽度,自行调整*/
        var counts = 5;
        img1 = new Image();
        img1.src = 'images/flash_07.jpg';
        img2 = new Image();
        img2.src = 'images/flash_071.jpg';
        img3 = new Image();
        img3.src = 'images/flash_072.jpg';
        img4 = new Image();
        img4.src = 'images/flash_073.jpg';
        img5 = new Image();
        img5.src = 'images/flash_074.jpg';
        //url1=new Image ();url1.src='';  //图片点击的网页链接
        //url2=new Image ();url2.src='';
        //url3=new Image ();url3.src='';  
        //url4=new Image ();url4.src=''; 
        //url5=new Image ();url5.src='';                                                   
        /* 建议将这块放置于JS中 下面的部分几乎是不需要任何改动*/
        var nn = 1;
        var key = 0;
        function change_img() {
            if (Sys.ie) {
                document.getElementById("pic").filters[0].Apply();
                document.getElementById("pic").filters[0].Play(duration = 2);
                //}
                eval('document.getElementById("pic").src=img' + nn + '.src');
                //eval('document.getElementById("url").href=url'+nn+'.src');
                nn++;
                if (nn > counts) {
                    nn = 1;
                }
                tt = setTimeout('change_img()', 7000);
            } else {
                if (key == 0) {
                    key = 1;
                } else if (document.all) {
                    document.getElementById("pic").filters[0].Apply();
                    document.getElementById("pic").filters[0].Play(duration = 2);
                }
                eval('document.getElementById("pic").src=img' + nn + '.src');
                //eval('document.getElementById("url").href=url'+nn+'.src');
                nn++;
                if (nn > counts) {
                    nn = 1;
                }
                tt = setTimeout('change_img()', 7000);
            }

        }
        //function changeimg(n){nn=n;window.clearInterval(tt);change_img();}
        document.write('<div><a id="url" ><img id="pic" style="border:0px; filter:progid:dximagetransform.microsoft.wipe(gradientsize=2.0,wipestyle=4, motion=forward)" width=' + widths + ' height=' + heights + ' /></a></div>');

        //for(var i=1;i<counts+1;i++){document.write('<a href="javascript:changeimg('+i+');" id="xxjdjj'+i+'" class="axx" target="_self">'+i+'</a>');}
        change_img();
    </script>
</div>