function zoom_init()
{
    try {
        var princ = $$(".imageprinc a img");
        if(princ.length < 1)
            return;
        princ = princ[0];
        princ.sourceimage = princ;
        
        var link = $$(".aggrandir a");
        if(link.length < 1)
            return;
        link = link[0];
        
        var images = $$(".imagesautres ul li a img");
        images.each(function(image) {
        
            image.targetImage = image.src.replace(/-sma.jpg/, "-med.jpg");
            image.targetLink = image.src.replace(/-sma.jpg/, "-big.jpg");
            image.parentNode.removeAttribute("href");
            image.style.cursor = "pointer";
            
            Event.observe(image, "click", function(e) {
                var imageClicked = Event.element(e);
                princ.src = imageClicked.targetImage;

                princ.parentNode.href = link.href = imageClicked.targetLink; 
                Event.stop(e);
            });
        
        });
    }
    catch(err)
    {alert(err);}
}