window.addEvent('domready', function() {
clone = $('contenu').clone();
$('contenu').setStyles({opacity:0});
$('margefooter').setHTML('<div style="position:absolute;top:300px;left:50%;"><img src="css/loading.gif" alt="Chargement en cours" /></div>');
});
window.addEvent('load', function() {
(function(){$('margefooter').setHTML('');}).delay(50);
new Fx.Style($('contenu'), 'opacity', {duration: 1500, onComplete:function(){$('contenu').replaceWith(clone)}}).start(0,1);
});