随机浮动代码

<script language=JavaScript>
//图片地址
var hbcms_img_src = 'http://www.baidu.com/img/sslm1_logo.gif';

//连接的网址
var hbcms_img_url = 'http://www.hbcms.com/';

//图片宽度
var hbcms_img_w = '137';

//图片高度
var hbcms_img_h = '60';

//鼠标移动到图片上显示的文字
var hbcms_img_alt = '点击看效果';

document.write('<div id=dd style="Z-INDEX: 1; WIDTH: '+hbcms_img_w+'px; POSITION: absolute; HEIGHT: '+hbcms_img_h+'px"> <a href="'+hbcms_img_url+'"><img src="'+hbcms_img_src+'" width="'+hbcms_img_w+'" height="'+hbcms_img_h+'" border="0" alt="'+hbcms_img_alt+'" onMouseOver="pause_resume();" onMouseOut="pause_resume();"></a></div> ');
var xPos = 20; // 起始横向位置(从左算起，单位象素)
var yPos = document.body.clientHeight; // 页面本身高度
var step = 1;
var delay = 30; // 速度，值越大速度越慢
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
dd.style.top = yPos;
//本代码由宏博cms网站内容管理系统(http://www.hbcms.com/)整理修改
function hbcms_changePos() {
width = document.body.clientWidth; // 判断浏览器窗口的宽度
height = document.body.clientHeight; // 判断浏览器窗口的高度
Hoffset = dd.offsetHeight;
Woffset = dd.offsetWidth;
dd.style.left = xPos + document.body.scrollLeft;
dd.style.top = yPos + document.body.scrollTop;
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);
}
}
//本代码由宏博cms网站内容管理系统(http://www.hbcms.com/)整理修改
function hbcms_start_pp() {
dd.visibility = "visible";
interval = setInterval('hbcms_changePos()', delay);
}
function pause_resume() {
if(pause) {clearInterval(interval);pause = false;}
else {interval = setInterval('hbcms_changePos()',delay);pause = true;}
}
hbcms_start_pp();

</script>