function checkEtapeOne(p, pwd1, pwd2, e, error_msg1, error_msg2, error_msg3, error_msg4) {

	var pseudo = document.getElementById(p);
	if (pseudo.value.length < 2) {
		alert(error_msg1);
		pseudo.select();
		return false;
	}

	var passe1 = document.getElementById(pwd1);
	var passe2 = document.getElementById(pwd2);
	if (passe1.value.length < 6) {
		alert(error_msg2);
		passe1.select();
		return false;
	}

	if (passe1.value != passe2.value) {
		alert(error_msg3);
		passe1.select();
		return false;
	}

	var email = document.getElementById(e);
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(email.value)) {
		alert(error_msg4);
		email.select();
		return false;
	}

}

function checkEtapeTwo(n, p, error_msg) {

	var nom = document.getElementById(n);
	if (nom.value.length < 2) {
		alert(error_msg);
		nom.select();
		return false;
	}

	var prenom = document.getElementById(n);
	if (prenom.value.length < 2) {
		alert(error_msg);
		prenom.select();
		return false;
	}

}

function checkEtapeThree(a, v, cp, error_msg) {

	var adresse = document.getElementById(a);
	if (adresse.value.length < 2) {
		alert(error_msg);
		adresse.select();
		return false;
	}

	var ville = document.getElementById(v);
	if (ville.value.length < 2) {
		alert(error_msg);
		ville.select();
		return false;
	}

	var code = document.getElementById(cp);
	if (code.value.length < 2) {
		alert(error_msg);
		code.select();
		return false;
	}

}


function checkEtapeFour(cu, error_msg) {

	var conditions = document.getElementById(cu);
	if (conditions.checked == false) {
		alert(error_msg);
		conditions.select();
		return false;
	}


}