var cpAD=new Array(); 
var cpADlink=new Array(); 
var cpADmsg=new Array(); 
var adNum=5;	 //定义了5个数组
var coll=0;

cpAD[0]="images/1.jpg";  		//链接图片
cpADlink[0]="cjdt/ShowArticle.asp?ArticleID=146"; 		//链接URL
cpADmsg[0]="1.jpg";		//状态栏提示信息

cpAD[1]="images/2.jpg"; 
cpADlink[1]="cjdt/ShowArticle.asp?ArticleID=351"
cpADmsg[1]="2.jpg"; 

cpAD[2]="images/3.jpg"; 
cpADlink[2]="cjdt/ShowArticle.asp?ArticleID=202"; 
cpADmsg[2]="3.jpg";

cpAD[3]="images/4.jpg"; 
cpADlink[3]="cjdt/ShowArticle.asp?ArticleID=203"; 
cpADmsg[3]="4.jpg"; 

cpAD[4]="images/5.jpg"; 
cpADlink[4]="cjdt/ShowArticle.asp?ArticleID=201"; 
cpADmsg[4]="5.jpg"; 

var preloadedimages=new Array(); 
for (i=1;i<cpAD.length;i++){ 
preloadedimages[i]=new Image(); 
preloadedimages[i].src=cpAD[i]; 
} 

//跳转的URL地址
function jump2url()
{ 
jumpUrl=cpADlink[adNum]; 
jumpTarget='_blank'; 
if (jumpUrl != '')
{ 
	if (jumpTarget != '')
		window.open(jumpUrl,jumpTarget); 
	else location.href=jumpUrl; 
	} 
}

//图片变化的函数
function changeimg(n)
{
	adNum=n;
	switch(adNum)
	{
	case 0:
	{
		window.img1.src="images/1-2.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
	case 1:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2-2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
	case 2:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3-2.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
		case 3:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4-2.gif";
		window.img5.src="images/5.gif";
		break;
	}
		case 4:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5-2.gif";
		break;
	}
	}
	window.clearInterval(theTimer);
	adNum=adNum-1;
	nextAd();
}
//当点击时直接跳转
function nextAd(){ 
coll++;
if(coll>1)
{
switch(adNum+1)
{
	case 5:
	{
		window.img1.src="images/1-2.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
	case 1:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2-2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
	case 2:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3-2.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5.gif";
		break;
	}
	case 3:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4-2.gif";
		window.img5.src="images/5.gif";
		break;
	}
    case 4:
	{
		window.img1.src="images/1.gif";
		window.img2.src="images/2.gif";
		window.img3.src="images/3.gif";
		window.img4.src="images/4.gif";
		window.img5.src="images/5-2.gif";
		break;
	}
}
}
if(adNum<cpAD.length-1)adNum++ ; 
else adNum=0; 
setTransition(); 
document.images.cpADrush.src=cpAD[adNum]; 
playTransition(); 
displayStatusMsg();
//定义了轮换时间 5s
theTimer=setTimeout("nextAd()", 5000); 
} 

function setTransition(){ 
if (document.all){ 
cpADrush.filters.revealTrans.Transition=23; 
cpADrush.filters.revealTrans.apply(); 
} 

} 
function playTransition(){ 
if (document.all) 
cpADrush.filters.revealTrans.play() 
} 
function displayStatusMsg() { 
status=cpADmsg[adNum]; 
document.returnValue = true; 
}