Php , jQuery and html combined

  <script>
    $(".boxer").boxer({
        formatter: formatCaptions
        }); 
    function formatCaptions($target) {
    return '<p><span></span><?php the_field('price')?>' + $target.attr("title") + '</p>';

}

I'm using a jQuery lightbox. The fact is that in the localhost it worked well, but now that i'm online it doesn't show what i need. The site is www.automediarent.it ( go to page "Autoveicoli" under "Le mie Auto" ) I hope that someone could help me. The lightbox is the one from Formstone