<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div id="signupbox" style=" margin-top:50px" class="mainbox col-md-8 col-md-offset-2 col-sm-8 col-sm-offset-2">
<div class="panel panel-info">
<div class="panel-heading">
<div class="panel-title">FORMULAIRE D'INSCRIPTION</div>
<div style="float:right; font-size: 85%; position: relative; top:-10px; ">Vous avez un compte! <a id="signinlink" href="#" onclick="$('#signupbox').hide(); $('#loginbox').show()">Se connecter</a></div>
</div>
<div class="panel-body" >
<form id="signupform" class="form-horizontal" role="form">
<div id="alert_enregist" style="display:none" class="alert alert-danger">
<p>Erreur:</p>
<span></span>
</div>
<div class="form-group">
<label for="prenom" class="col-md-3 control-label">Prenom</label>
<div class="col-md-9">
<input type="text" class="form-control" id="prenom" name="prenom" placeholder="prenom" required>
</div>
</div>
<div class="form-group">
<label for="nom" class="col-md-3 control-label">Nom</label>
<div class="col-md-9">
<input type="text" class="form-control" id="nom" name="prenom" placeholder="Nom" required>
</div>
</div>
<div class="form-group">
