// JScript 文件
//漂浮广告文件
var x = 50,y = 60 
var xin = true, yin = true 
var step = 1 
var delay = 10 
var obj=document.getElementById("ad") 
function floatAD() { 
var bodySL
var bodyST
if(window.pageXOffset)
{
    bodySL=window.pageXOffset;
}
else if(document.documentElement&&document.documentElement.scrollLeft)
{
    bodySL=document.documentElement.scrollLeft;
}
else if(document.body)
{
    bodySL=document.body.scrollLeft; //author: meizz
}

if(window.pageYOffset)
{
    bodyST=window.pageYOffset;
}
else if(document.documentElement&&document.documentElement.scrollTop)
{
    bodyST=document.documentElement.scrollTop;
}
else if(document.body)
{
    bodyST=document.body.scrollTop;
}


var bodyCW, bodyCH; 
if(window.innerWidth)
{
    bodyCW=window.innerWidth;
}
else if(document.documentElement&&document.documentElement.clientWidth)
{ 
    bodyCW=document.documentElement.clientWidth;
}
else if(document.body)
{
    bodyCW=document.body.clientWidth;
}

if(window.innerHeight)
{
    bodyCH=window.innerHeight;
}
else if(document.documentElement&&document.documentElement.clientHeight)
{ 
    bodyCH=document.documentElement.clientHeight; 
}
else if(document.body)
{
    bodyCH=document.body.clientHeight;
}

var L=T=0 
var R= bodyCW-obj.offsetWidth 
var B = bodyCH-obj.offsetHeight 
obj.style.left = x + bodySL
obj.style.top = y + bodyST 
x = x + step*(xin?1:-1) 
if (x < L) { xin = true; x = L} 
if (x > R){ xin = false; x = R} 
y = y + step*(yin?1:-1) 
if (y < T) { yin = true; y = T } 
if (y > B) { yin = false; y = B } 
} 
var itl= setInterval("floatAD()", delay) 
obj.onmouseover=function(){clearInterval(itl)} 
obj.onmouseout=function(){itl=setInterval("floatAD()", delay)}