var ii=0;
var iii=0;
var no=0;
var speed=4;//设置图片翻动速度，现在为8秒钟翻一幅
var imgobj;
var tdobj;

function testobj()
{
	var tbbb;
	tbbb=document.all.tags("table").item(0);
	if (tbbb==null)
	{
	return false;
	}
	else
	{
	
	imgobj=tbbb.all.tags("img");
	tdobj=tbbb.all.tags("td");
	if (imgobj.item(0)==null||tdobj.item(0)==null)
	{
	return false;
	}
	else
	{
	return true;
	}
	}
}
function isobj(obj)
{
	if (obj==null)
	{
	return false;
	}
	else
	{
	return true;
	}
}
function initimg()
{
	var imid, i;
	var imgnum=0;
	if (isobj(imgobj.item(0))&&isobj(tdobj.item(0)))
	{
	imgnum=imgobj.length;
	for(i=0;i<imgnum;i++)
	{
			tdobj.item(i).style.display="none";
			tdobj.item(i).style.textAlign="center";
			imgobj.item(i).style.filter="revealTrans(Duration=4.0, Transition=23)";
			imgobj.item(i).style.visibility="hidden";
	}
	}
	return imgnum;
}
function changeimg()
{
	var nnn;
	if (testobj())
	{
		nnn=initimg();
		showimg();
		setInterval("turnit("+nnn+")",speed*1000);
	}
	else
	{
		no++;
		if (no<3) setTimeout("changeimg()",1000);
	}
}
function turnit(num)
{
	iii=ii;
	if (ii<num-1)
	{
		ii++;
	}
	else
	{
		ii=0
	}
	hidimg();
	setTimeout("showimg()",1000)
}
function showimg()
{
	var ele,ele1,ele2;
	ele=imgobj.item(ii);
	ele1=tdobj.item(ii);
	ele2=tdobj.item(iii);
	if (isobj(ele)&&isobj(ele1)&&isobj(ele2))
	{
	ele2.style.display="none";
	ele1.style.display="";
	ele.filters.item(0).apply();
	ele.filters.item(0).transition = 12;
	ele.style.visibility = "";
	ele.filters(0).play(1.0);
	}
}
function hidimg()
{
	var ele;
	ele=imgobj.item(iii);
	if (isobj(ele))
	{
	ele.filters.item(0).apply();
	ele.filters.item(0).transition = 12;
	ele.style.visibility = "hidden";
	ele.filters(0).play(1.0);
	}
}
// script writen by Fu Dawei