adWidth = 160;//廣告寬度
	 
	  nowX = 100;//目前位置(left)
	  nowY = 100;//目前位置(top)
	 
	  fad_style = document.getElementById('iRFloating').style;
	 
	  function fadIni()
	  {
	      innerWidth = document.body.clientWidth;
	      innerHeight = document.body.clientHeight;
	   
	      edge = (innerWidth-1000)/2;
	   
	      if( edge > adWidth )
	      {
	          posX = edge + 1000;
	      }
	      else
	      {
	          posX = innerWidth-adWidth;
	      }
   
	      posY = 100;
	   
	  }
	  function fadRefresh()
	  {
	      offsetX = posX + document.body.scrollLeft - nowX;
	      offsetY = posY + document.body.scrollTop - nowY;
           nowX += offsetX / 5;
          nowY += offsetY / 5;
	      fad_style.left = nowX;
	      fad_style.top = nowY;
	   
      floatID = setTimeout('fadRefresh()', 20 );//Refresh時間
	  }
	   
	  function fadStart()
	  {
	      fadIni();
	      window.onresize=fadIni;
	      fadRefresh();
	  }
	   
	  fadStart();