$(document).ready(function(){	
    $('#signupform').submit(function () {
            if ($('#password').val() != $('#confirmpassword').val()) {
                    alert('Les mots de passes ne correspondent pas');
                    $('#password').val('');
                    $('#confirmpassword').val('');
                    return false;
            } else {
                    $(this).submit();
                    return true;
            }
    });

    $('#birthdate').datepicker({
        changeMonth: true,
        changeYear: true,
        defaultDate: '-28y',
        yearRange: '-81:+34'
    });
});