// JavaScript Document

src1 = ["images/a1.jpg", "images/b1.jpg", "images/c1.jpg"]
src2 = ["images/a2.jpg", "images/b2.jpg", "images/c2.jpg"]
src3 = ["images/a3.jpg", "images/b3.jpg", "images/c3.jpg"]

duration = 10;
ads1=[]; ct1=0;
ads2=[]; ct2=0;
ads3=[]; ct3=0;

function switchAd1() {
	var n1=(ct1+1)%src1.length;
	if (ads1[n1] && (ads1[n1].complete || ads1[n1].complete==null)) {
		document["grupo1"].src = ads1[ct1=n1].src;
	}
	ads1[n1=(ct1+1)%src1.length] = new Image;
	ads1[n1].src = src1[n1];
//	alert(src1[n1]);
	setTimeout("switchAd1()",duration*1000);
}
function switchAd2() {
	var n2=(ct2+1)%src2.length;
	if (ads2[n2] && (ads2[n2].complete || ads2[n2].complete==null)) {
		document["grupo2"].src = ads2[ct2=n2].src;
	}
	ads2[n2=(ct2+1)%src2.length] = new Image;
	ads2[n2].src = src2[n2];
	setTimeout("switchAd2()",duration*1000);
}

function switchAd3() {
	var n3=(ct3+1)%src3.length;
	if (ads3[n3] && (ads3[n3].complete || ads3[n3].complete==null)) {
		document["grupo3"].src = ads3[ct3=n3].src;
	}
	ads3[n3=(ct3+1)%src3.length] = new Image;
	ads3[n3].src = src3[n3];
	setTimeout("switchAd3()",duration*1000);
}

onload = function(){
if (document.images)
switchAd1();
switchAd2();
switchAd3();
}