YQL like Facebook site preview

HTML

<div id="page" style="background-color:#C00;color:#CCC">
<div id="main" role="main" style="margin:10px">
<section id="input">
<form id="preview">
<div class="row">
<label id="labelurl" for="url" style="display:none;">Link Attached</label>
<input value="http://www.repubblica.it/politica/2012/10/06/dirette/primarie_al_via_l_assemblea_pd_si_cerca_l_accordo_sulle_regole-43964405/" type="text" id="url" name="url" class="text" placeholder="http://" size="60" onclick="clearURL()" />
</div>
<input type="submit" id="submit" value="Embed Link" style=’-moz-user-select: none;background:#cc0000;border: 1px solid #990000;box-shadow: 0 1px #cc3300 inset;color: white;padding: 3px 5px;text-decoration: none;text-shadow: 0 -1px 0 #990000;font: 12px Verdana, sans-serif;display:none’/>
</form>
</section>
<section id="results"></section>
</div>

CSS

ul.image-select {

  
}


.image-select li{
 display: inline;
list-style-type: none;
padding-right: 20px;
    max-width:100px;
    overflow:hidden;
}

.image-select li{
 display: inline;

}

JavaScript

/**
 * Create a Link Preview
 * Using YQL for cross domain data scraping
 *
 * http://www.facebook.com/Who.Sees.What
 * @author whoseeswhat.com (contribution of Jocelyn (@jsfwd / ninjagirl.com))
 * still problems with imgs, find some correction
 */
(function($) 
{
    $(document).ready(function() 
    {
        $('#preview').bind('submit', function(e)
        {
            e.preventDefault();
            // get the url, just going to assume a valid link's been entered
            var url = 'http://wimi5.com/wimi5-primer-motor-videojuego-html5/';    
            if (url.substring(0, 4) == 'http')
            {
                getLinkMeta(url);
            }
            else
            {
                displayMessage('URL must start with <em>http://</em>', 'error');
            }
            return false;
        });
    
    /**
     * Using a supplied url, fetch the title, description and image to display
     * as a preview
     *
     * @param url        assume this is a valid url
     */
        function getLinkMeta(url)
        {
            // SELECT * FROM html WHERE url="http://mashable.com/2012/01/25/get-old-facebook-back" and xpath="//title|//head/meta"
            // can't use xpath to select meta 'property' attributes (ex./ og:image)
            // YQL's html data table run through HTML Tidy which strips as it thinks invalid                        
            // create the yql query (encoded!) with the url provided
            
          
            
            var q = 'http://query.yahooapis.com/v1/public/yql?q=' + encodeURIComponent('select * from html where url="' + url + '" and (xpath="//title|//head/meta")') + '&format=json&callback=?';          
            console.log(q);          
            $.ajax(
            {
                type: 'GET',
                url: q, 
                dataType: 'jsonp',
                error: function(d,t){
                    
                    $("#imageplace-before").append("Errore nel parsing del DOM...