function addCheckEmail(x){
	cMail = "field"+x.cmail;
	email = "field"+x.email;
	
	if($(email) && $(cMail)) {
		form = $(email).form;
		for(o in form.elements) {
			if(form.elements[o].type=="button") {
				Event.observe( $(form.elements[o]), "click", function(evt) {
					var remail= /^([^@\s<&>]+)@(?:([-a-z0-9]+)\.)+([a-z]{2,})$/i
					ckemail = $F(email).search(remail);
					if($F(cMail)==$F(email)&&$F(email)!=""&&ckemail!=-1) {
						form.submit();
					} else {
						if($F(email)=="") {
							showAlert("Vous devez saisir votre email", "");
						} else if($F(cMail)!=$F(email)) {
							showAlert("Votre email et sa confirmation ne correspondent pas", "");
						} else if(ckemail==-1){
							showAlert("Vous n'avez pas saisi un email", "");
						}
					}
				}, false);		
			}
		}
	}
}

function showAlert(title, msg) {
	alertbox = $('alertBox');
	o_dimension1 = alertbox.getDimensions();
	var offset = $(document.body).cumulativeScrollOffset();
	var Left=(window.screen.width/2)-(o_dimension1.width/2);
	var Top=(window.screen.height/2)-(o_dimension1.height/2)+(offset.top/2);	
	alertbox.setStyle("position: absolute; top: "+Top+"px; left: "+Left+"px");
	$('alertTxt').update(title);
	$('alertMsg').update(msg);
	
	alertbox.show(true);
}