function CheckForm(f) {
	for(var i = 0; i < f.length; i++)
	{
		if (f[i].value == '')
  	{
    	alert('Merci de renseigner le champ "' + f[i].name + '"');
	    return (false);
	}
	else
	{
		if (f[i].name == 'email')
		{
			var j = i;		
		}
	}
  }
  if(VerifEmail(f[j].value))
  	f.submit();
  else
  	return (false);
}

function VerifEmail(email)
{
	var place = email.indexOf("@", 1);
	var point = email.indexOf(".", place + 1);
	if ((place > -1) && (email.length > 2) && (point > 1))
		return (true);
	else
	{
		alert('Adresse email non valide');
		return (false);
	}
}