// JavaScript Document
adWidth = 115;//廣告寬度
nowX = 980;//目前位置(left)   
nowY = 20;//目前位置(top) 
fad_style = document.getElementById('iRFloating').style;   
function fadIni() 
{   
innerWidth = document.documentElement.clientWidth;  
innerHeight = document.documentElement.clientHeight; 

edge = (innerWidth-980)/2;   
if( edge > adWidth )  
{  
posX = edge + 980;  
}  
else  
{   
posX = innerWidth-adWidth; 
}   
posY = 20; 
}   
function fadRefresh() 
{ 

offsetX = posX + document.documentElement.scrollLeft - nowX;
offsetY = posY + document.documentElement.scrollTop - nowY;
nowX += offsetX / 5;
nowY += offsetY / 5; 

fad_style.left = nowX;
if (document.documentElement.scrollTop > 30)
{
fad_style.top = nowY - 30; 
}
else
{
fad_style.top = 20;
}
floatID = setTimeout('fadRefresh()', 20 );//Refresh時間 
}  
function fadStart()  
{  
fadIni();  
window.onresize=fadIni;  
fadRefresh(); 
}  
fadStart();