images = [];

myImg0 = new Image();
myImg0.src = './img/_banner/uzmed.gif';
images[0] = './img/_banner/uzmed.gif';

myImg1 = new Image();
myImg1.src = './img/_banner/gov.jpg';
images[1] = './img/_banner/gov.jpg';

myImg2 = new Image();
myImg2.src = './img/_banner/el.cat2.gif';
images[2] = './img/_banner/el.cat2.gif';

var imgNum = Math.round(Math.random() * (3 - 1));

function imgOnLoad() {

}

function nextImage() {
    if (images.length == 0) {
        return false;
    }

        document.getElementById('banner1').src = (imgNum == images.length) ? images[(imgNum = 1) - 1] : images[imgNum++];
    document.getElementById('banner1.link').href = (links[images[imgNum - 1]] == null) ? '#' : links[images[imgNum - 1]];
    document.getElementById('banner2').src = (imgNum == images.length) ? images[(imgNum = 1) - 1] : images[imgNum++];
    document.getElementById('banner2.link').href = (links[images[imgNum - 1]] == null) ? '#' : links[images[imgNum - 1]];
	
    setTimeout('nextImage(this)', 50000);	
}

nextImage();