function openHelp(url) {
	new Insertion.Top(new Element('help'), '');
	$('help').update('<div class="popup-contenu"><table class="titreFenetre"><tr><td>Aide</td><td align="right"><a href="javascript:closeHelp()" style="color:white;">Fermer</a></td></tr></table><div id="helpcontenu"></div></div>');
	new Ajax.Updater($('helpcontenu'), url, {
		method: 'get'
	});
	
}

function closeHelp() {
	$('help').update('');
	}