player.js

var davids_data = {
    timeline : {
        name : "My Timeline",
        annotations : [
            { start: 1, end : 34, type : "highlight", text : "Lorem Ipsum" }, 
            // a2, 
            // a3,
            // a4
        ]      
    }
};

player.addData(davids_data);

player.addEventListener("annotation", function(e) {
   console.log(e.data); // Annotation object
});

// or

player.addEventListener("annotation.highlight", function(e) {
   console.log(e.data); // Annotation object
});