var objbanner=document.getElementById("banner");
var imglist=objbanner.getElementsByTagName("img");
var timer;
var timer2;
var op;
var current;
var next;
var i=0;
 
function change()//ͼƬ�ƽ���
{
current=imglist[i%9];
next=imglist[(i+1)%9];
current.style.display="block";
next.style.display="block";
current.className="current";
next.className="next";
 
op=0;
swap();
 
i=i+1;//5000ΪͼƬͣ��ʱ�䡣��Ϊʱ�����첽����������
}
 
function usechange()
{
timer=setInterval("change()",6000);
}
 
function swap()//ͼƬ���溯��
{
op++;
current.style.opacity=(100-op)/100;//for ff/chrome
next.style.opacity=op/100;
current.style.filter = "Alpha(Opacity=" + (100-op) + ")";//for ie
next.style.filter="Alpha(Opacity=" + op + ")";
timer2=setTimeout("swap()",5);//10ΪͼƬ�л����ʡ�����ԽС��ʱ�����첽���ԽС��
if(op==100)
{
clearTimeout(timer2);
}
 
}
 
if(document.all)
{
  window.attachEvent('onload',usechange);
}
else
{
  window.addEventListener('load',usechange,false);
}