var imageIndex = 0;
var wid12 =270;
var hig12 = 180;

var rImg = new Array();
var linkAr = new Array();

linkAr[0] = "http://www.rainbowcs.org/web/Sponsors.php";
linkAr[1] = "http://www.rainbowcs.org/web/Sponsors.php";
linkAr[2] = "http://www.rainbowcs.org/web/Sponsors.php";

rImg[0] = new Image(wid12,hig12);
rImg[0].src = "/web/image/ad_CanonMusic_o.JPG";
rImg[1] = new Image(wid12,hig12);
rImg[1].src = "/web/image/ad_HuangTutor_o.JPG";
rImg[2] = new Image(wid12,hig12);
rImg[2].src = "/web/image/ad_kevinlei.jpg";

function rotater()
{
	document["imgAD"].src = rImg[imageIndex].src;
	var ss = document.getElementById("urlAD");
	ss.setAttribute("href",linkAr[imageIndex]);

	if( imageIndex < 2)
	{
		imageIndex= imageIndex+1;
	}
	else
	{
		imageIndex = 0;
	}

	rTimer = setTimeout('rotater()', 5000 );
}