<script language="JavaScript">
    function checkform() {
        if (document.ExtUserForm.Username.value.length <= 0) {
            alert('Specify username');
            document.ExtUserForm.Username.focus();
            return false;
        }
        if (document.ExtUserForm.Password.value.length <= 0) {
            alert('Specify password');
            document.ExtUserForm.Password.focus();
            return false;
        }
    }
</script>
<div class="grid__col-12 grid--align-center">
    <div class="jks-login__container">
        <h1 class="form__header">Login</h1>
        <form name="ExtUserForm" method="post" onSubmit="return checkform();" class="jks__login__form form">
            <div class="form__field-group">
                <label for="Username">Brugernavn</label>
                <input type="Text" name="Username" id="loginUsername" class="std item-field form-control" value="" />
            </div>
            <div class="form__field-group">
                <label for="Password">Kodeord</label>
                <input type="Password" name="Password" id="Password" class="std item-field form-control" />
            </div>
            <div class="form__fields-group">
                <input type="Submit" class="btn btn--secondary btn--line-height" id="loginBtn" value="Login" />
            </div>
        </form>
    </div>
</div>
