@media (max-width: 770px) { 
.thumbnail-scroller .thumbnail { 
width: 100px !important; 
height: 50px !important; 
font-size: 9px; 
} 
}

@media (max-width: 480px) { 
.thumbnail-scroller .thumbnail {
width: 60px !important;
height: 40px !important;
font-size: 5px;
}

.thumbnail-scroller .thumbnail-title {
font-size: 6px;
}

.thumbnail-scroller .thumbnail-description {
display: none;
}
}

jQuery( document ).ready(function( $ ) { 
function resizeThumbnails() { 
var slider = $( '.advanced-slider' ); 
var thumbnailWidth = slider.width() * 0.20;

slider.find( '.thumbnail' ).css( { 'width': thumbnailWidth, 'height': thumbnailWidth * 0.5 } ); 
}

resizeThumbnails();

$( window ).resize(function(){ 
resizeThumbnails(); 
}); 
});