hd1/links.js

function hd1_done(data) {
        alert('URL success!');
        if (data.indexOf('youtu.be') > -1) {
                alert('youtube link!');
                video_uuid = data.substring(17);
                text = '<iframe src="https://www.youtube.com/embed/'+video_uuid+'" frameborder height="315" width="560"></iframe>'; else
        } else if (data.indexOf('png') > -1 || data.indexOf('jpg') > -1) {
                alert('image url!');
                text = '<img src="'+data+'" height="420" width="240"/>';
        } else { // other sites to resolve go here
                alert('Normal link!');
                text = data;
        }
        $(this).html(text);
}

function hd1_mouseOver(evt) {
    alert('in mouseover');
    var thePage = $(this).text();
    alert('got url '+thePage);
    $.ajax({
        url: '/title',
        data: {
            "page": thePage
        },
        dataType: 'text',
                success: hd1_done,
                context: this});
}

function hd1_load(jQuery) {
    alert('document is ready!');
    $('.link a').on("mouseover", hd1_mouseOver);
}

$(document).ready(hd1_load);