window.addEvent( 'domready', function () {
    $( 'make' ).addEvent( 'change', function () {
        new Request.JSON( {
            'data' : {
                'format' : 'json',
                'type' : 'model',
                'rule' : this.value
            },
            'url' : '/common/load-enums',
            'onSuccess' : function ( enums, responseXML ) {
                $( 'model' ).length = 1;
                for ( var i = 0, len = enums.length; i < len; i++ ) {
                    $( 'model' ).options[ $( 'model' ).options.length ] = new Option( enums[ i ].title, enums[ i ].slug );
                }
            }
        } ).get();
    } );
} );