get vimeo thumbnail

var video_code = $(".video-code").val();
$.ajax({
    type:'GET',
    url: 'http://vimeo.com/api/v2/video/' + video_code + '.json',
    jsonp: 'callback',
    dataType: 'jsonp',
    success: function(data){
        var thumbnail_src = data[0].thumbnail_large;
        if(thumbnail_src) {
            pageBody.find('.thumb-container img').attr("src", thumbnail_src);
        }
    }
});