var links = new Array(); 
links[1] = "http://www.antlertek.com/en/product_atpr.html"; 
links[2] = "http://www.antlertek.com/en/product_altr.html"; 
var imgs = new Array(); 
for(var n = 1; n <= 5; n++) imgs[n] = new Image(); 
imgs[1].src = "http://www.antlertek.com/images/en_banner_ad_atpr.jpg"; 
imgs[2].src = "http://www.antlertek.com/images/en_banner_ad_altr.jpg"; 
var tits = new Array(); 
tits[1] ="APTR"; 
tits[2] = "ALTR"; 

var imgwidth = 980;//图片宽度 
var imgheight = 60;//图片宽度 

var str = "<style type='text/css'>"; 
str += "#imgnv{display:none;position:absolute;bottom:-1px;right:0;height:16px;}#imgnv div{float:left;margin-right:1px;}"; 
str += "#imgnv div.on,#imgnv div.off{margin-bottom:1px;width:30px;height:15px;line-height:18px!important;line-height:15px;font-size:9px;text-align:center;cursor:pointer;cursor:hand}"; 
str += "#imgnv div.on{background:#CE0609;color:#FFF;font-weight:bold}"; 
str += "#imgnv div.off{background:#323232;color:#FFF;text-decoration:none}"; 
str += "#titnv{margin-top:3px;color:#000;text-align:center;display:none;}"; 
str += "</style>"; 
str += "<div style='position:relative'>"; 
str += "<div><a id='dlink' href='" + links[1] + "' target='_self'><img id='dimg' src='" + imgs[1].src + "' border='0' width='" + imgwidth + "' height='"+imgheight+"' style='filter:Alpha(opacity=100)' onmouseover='Pause(true)' onmouseout='Pause(false)'></a></div>"; 

//修改点1：循环添加内层div内容以增加个数 
str += "<div id='imgnv'><div id='it1' class='on' onmouseover='ImgSwitch(1, true)' onmouseout='Pause(false)'>1</div><div id='it2' class='off' onmouseover='ImgSwitch(2, true)' onmouseout='Pause(false)'>2</div><div id='it3' class='on' onmouseover='ImgSwitch(3, true)' onmouseout='Pause(false)'>3</div><div id='it4' class='off' onmouseover='ImgSwitch(4, true)' onmouseout='Pause(false)'>4</div></div>"; 
str += "<div id='titnv'><b>" + tits[1] + "</b></div>"; 
str += "</div>"; 
document.write(str); 

var oi = document.getElementById("dimg"); 
var pause = false; 
var curid = 1; 
var lastid = 1; 
var sw = 1; 
var opacity = 100; 
var speed = 20; 
var delay = (document.all)? 700:700; 

function SetAlpha(){ 
if(document.all){ 
if(oi.filters && oi.filters.Alpha) oi.filters.Alpha.opacity = opacity; 
}else{ 
oi.style.MozOpacity = ((opacity >= 100)? 99:opacity) / 100; 
} 
} 

function ImgSwitch(id, p){ 
if(p){ 
pause = true; 
opacity = 100; 
SetAlpha(); 
} 
oi.src = imgs[id].src; 
document.getElementById("dlink").href = links[id]; 
document.getElementById("it" + lastid).className = "off"; 
document.getElementById("it" + id).className = "on"; 
document.getElementById("titnv").innerHTML = "<b>" + tits[id] + "</b>"; 
curid = lastid = id; 
} 

function ScrollImg(){ 
if(pause && opacity >= 100) return; 
if(sw == 0){ 
opacity += 2; 
if(opacity > delay){ opacity = 100; sw = 1; } 
} 
if(sw == 1){ 
opacity -= 3; 
if(opacity < 10){ opacity = 10; sw = 3; } 
} 
SetAlpha(); 
if(sw != 3) return; 
sw = 0; 
curid++; 
//修改点2：这里的4也是个数 
if(curid > 2) curid = 1; 
ImgSwitch(curid, false); 
} 

function Pause(s){ 
pause = s; 
} 

function StartScroll(){ 
setInterval(ScrollImg, speed); 
} 

function CheckLoad(){ 
if (imgs[1].complete == true && imgs[2].complete == true) { 
clearInterval(checkid); 
setTimeout(StartScroll, 2000); 
} 
} 

var checkid = setInterval(CheckLoad, 10);