function initApercu() {
    var qs = getElementsByClass('apercus');
    for(var i=0; i<qs.length; i++) {
        q = qs[i];
        addEvent(q, 'click', switchApercu);
    }
}
function switchApercu(e) {
    var evt = getStandardEvent(e);
    var elem = evt.target;
	if(dest = $(elem.className)){
		size_max = 299;
		url = elem.src.replace("thumbs/","");
		dest.innerHTML = '<img src="'+url+'" width="'+size_max+'" />';
	}
    evt.preventDefault();
    return false;
}

addEvent(window, 'load', initApercu);