function deleteArticle( id ) {
  if (confirm("Der Artikel wird gelöscht. Bitte bestätigen!")) { 
    window.location = 'admin/shop?delete=' + id;
  }
}

function loginFocus( field ) {
	var el = document.getElementById( 'login-' + field );
	if (field == 'username') {
		if (el.value == 'Benutzername') {
			el.value = '';
		}
	}
	if (field == 'password') {
		if (el.value == 'Passwort') {
			el.value = '';
		}
	}
}

function loginChange( field ) {
	if (field == 'password') {
		var el = document.getElementById( 'login-input' );
		el.style.display = 'block';
	}
}

function loginBlur( field ) {
	var el = document.getElementById( 'login-' + field );
	if (field == 'username') {
		if (el.value == '') {
			el.value = 'Benutzername';
		}
	}
}