function verifMail( email )
{
	var maReg = new RegExp ( "^\\w[\\w+\.\-]*@[\\w\-]+\.\\w[\\w+\.\-]*\\w$", "gi" ) ;

	if ( email.search( maReg ) == -1 )
	{
		alert ( "l\'email est faux" ) ;
		document.formulaire.email.value='';document.formulaire.email.focus();
	}
}

function valider()
{
	var email = document.form.email.value;
    var modele = /^[a-z0-9\-_\.]+@[a-z0-9]+\.[a-z]{2,5}$/i;
    if (modele.test(email))
        alert("Votre adresse email est valide !");
    else
        alert("Votre adresse email est invalide !");
    return false;
}

function getxhr()
{
	var xhr;

	if(window.XMLHttpRequest)
		xhr = new XMLHttpRequest(); 
	else if(window.ActiveXObject)
	{ 
		try 
		{
			xhr = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (e) 
		{
			xhr = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	else 
	{
		xhr = false; 
	}
	return xhr; 
}

function checkiduser(id)
{
    if (id == '') return false;
    return true;
}

function checkpw(pw)
{
    if (pw == '') return false;
    return true;
}

function checkmail(mail)
{
    if (mail == '') return false;
    return true;
}