var divLeft=0;//设置广告块初始左边位置 
var divTop=0;//设置广告块初始顶部位置 
var divWidth=160;//设置广告块宽度 
var divHeight=180;//设置广告块高度 
var divImg = "ad/ICBC20111229_1.jpg"; //设置广告图片的URL地址 
var divUrl = "ad/ICBC20111229_2.html"; //设置广告链接 
var divTitle=""; 
document.write("<DIV id=\"adDiv\" style=\"text-align:center;position:absolute; left:"+divLeft); 
document.write("px; top:"+divTop+"px; width:"+divWidth+"px; height:"+divHeight); 
document.write("px; z-index:1;\" onMouseOver=\"javascript:window.clearInterval(varId)\""); 
document.write(" onMouseOut=\"javascript:beginMoveAd();\"><a target=\"_blank\" href=\""+divUrl+"\">"); 
document.write("<img src=\""+divImg+"\" border=\"0\" alt=\""+divTitle+"\"></a><br/><a href=\"javascript:HideDiv('adDiv')\"><strong>关闭</strong></a></DIV>") 

                function HideDiv(name) {
                    document.getElementById(name).style.display = 'none';
                }
//飘浮广告 
var _stepx=2;_stepy=2;//初始化每次偏离的象素 
var moveSpeed=50;//速度 
var varId;//获取setInterval的ID 
function moveAd(){//飘浮广告主函数 
var adLeft=parseInt(adDiv.style.left); 
var adTop=parseInt(adDiv.style.top); 
var adWidth=parseInt(adDiv.style.width); 
var adHeight=parseInt(adDiv.style.height) 
var _bodyLeft=document.body.scrollLeft; 
var _bodyTop=document.body.scrollTop; 
var _bodyHeight=document.body.clientHeight+_bodyTop; 
var _bodyWidth=document.body.clientWidth+_bodyLeft; 
if(adLeft<=_bodyLeft){ 
_stepx=2; 
} 
if(adTop<=_bodyTop){ 
_stepy=2; 
} 
if((adLeft+adWidth)>=_bodyWidth){ 
_stepx=-2 
} 
if((adTop+adHeight)>=_bodyHeight){ 
_stepy=-2 
} 
adDiv.style.left=adLeft+_stepx; 
adDiv.style.top=adTop+_stepy; 
} 
function beginMoveAd(){//启动飘浮 
varId=window.setInterval("moveAd()",moveSpeed) 
} 
window.onload=beginMoveAd;//给窗体的load事件附加飘浮函数