MediaPhotoPager = TdhPager.extend ( {
    getPagingElement:function () {
        var ret = $( 'mediaImagesNav' );
        if ( !ret ) {
            alert('mediaImagesNav is invalid');
        }
        return ret;
    },
    
    display:function ( item, first ) {
        if ( item.hasClass('paging-hidden') ) {
            item.removeClass('paging-hidden');
        }
    },
    
    isIncluded:function ( item ) {
        return true;
    }
} );


MediaVideoPager = TdhPager.extend ( {
    getPagingElement:function () {
        var ret = $( 'mediaVideosNav' );
        if ( !ret ) {
            alert('mediaVideosNav is invalid');
        }
        return ret;
    },
    
    display:function ( item, first ) {
        if ( item.hasClass('paging-hidden') ) {
            item.removeClass('paging-hidden');
        }
    },
    
    isIncluded:function ( item ) {
        return true;
    }
} );