var how_many_ads = 4;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;

if (ad==1) {
banner="images/home_main_img1.jpg";
}
if (ad==2) {
banner="images/home_main_img2.jpg";
}
if (ad==3) {
banner="images/home_main_img3.jpg";
}
if (ad==4) {
banner="images/home_main_img4.jpg";
}

alt="The Guidance Center";
width="760";
height="212";

document.write('<img src=\"' + banner + '\" width=');
document.write(width + ' height=' + height + ' ');
document.write('alt=\"' + alt + '\" border=0>');

// End -->