1 <div id="img1" style="top: 21px; left: 491px;">
2 <!--链接地址--><a href="#" target="_blank">
3 <!--图片地址--><img src="/uploadfiles/image/logo.png" border="0">
4 </a>
5 </div>
1 <script type="text/javascript">
2 var xPos = 300; //起始定位：X轴位置（居左像素）
3 var yPos = 200; //起始定位：Y轴位置（居上像素）
4 var step = 1; //每次移动像素
5 var delay = 10; //每移1次setp所需时间（单位毫秒，1000毫秒=1秒）
6 var height = 0;
7 var Hoffset = 0;
8 var Woffset = 0;
9 var yon = 0;
10 var xon = 0;
11 var pause = true;
12 var interval;
13 var obj=window.document.getElementById("img1"); //获取DIV图层对象
14 obj.style.top = yPos + "px";
15 function changePos(){
16 width = window.innerWidth == 0 ? (document.documentElement.clientWidth == 0 ? document.body.clientWidth : document.documentElement.clientWidth) : window.innerWidth;
17 height = window.innerHeight == 0 ? (document.documentElement.clientHeight == 0 ? document.body.clientHeight : document.documentElement.clientHeight) : window.innerHeight;
18 Woffset = obj.offsetWidth; Hoffset = obj.offsetHeight; scrollLeft = document.documentElement.scrollLeft == 0 ? document.body.scrollLeft : document.documentElement.scrollLeft;
19 scrollTop = document.documentElement.scrollTop == 0 ? document.body.scrollTop : document.documentElement.scrollTop;
20 obj.style.left = xPos + scrollLeft + "px";
21 obj.style.top = yPos + scrollTop + "px";
22 if (yon) {yPos = yPos + step;} else {yPos = yPos - step;}
23 if (yPos < 0) {yon = 1;yPos = 0;}
24 if (yPos >= (height - Hoffset)) {yon = 0;yPos = (height - Hoffset);}
25 if (xon) {xPos = xPos + step;} else {xPos = xPos - step;}
26 if (xPos < 0) {xon = 1;xPos = 0;}
27 if (xPos >= (width - Woffset)) {xon = 0;xPos = (width - Woffset);}
28 }
29 function start(){ obj.visibility = "visible"; interval = setInterval('changePos()', delay); }
30 function pause_resume(){ if(pause){ clearInterval(interval); pause = false; }else{ interval = setInterval('changePos()',delay); pause = true; } }
31 start();
32 </script>
