//三张图片相互替换《begin》
var SlideShowSpeed = 5000;
var CrossFadeDuration = 3;
var Picture = new Array();
var Caption = new Array();

Picture[1]  = 'images/index_main1.jpg';
Picture[2]  = 'images/index_main2.jpg';
Picture[3]  = 'images/index_main3.jpg';

var tss;
var iss;
var jss = 1;
var pss = Picture.length-1;

var preLoad = new Array();
for (iss = 1; iss < pss+1; iss++){
preLoad[iss] = new Image();
preLoad[iss].src = Picture[iss];}

function runSlideShow()
{
   if (document.all)
    {
        document.images.GroupP.style.filter="blendTrans(duration=2)";
        document.images.GroupP.style.filter="blendTrans(duration=CrossFadeDuration)";
        document.images.GroupP.filters.blendTrans.Apply();
    }
        document.images.GroupP.src = preLoad[jss].src;
        if (document.all) document.images.GroupP.filters.blendTrans.Play();
        jss = jss + 1;
        if (jss > (pss)) jss=1;
        tss = setTimeout('runSlideShow()', SlideShowSpeed);
}
//三张图片相互替换《end》

function init()
{
    runSlideShow();
    //start();
}