var tabPub = new Array();

$(document).ready(function() {
        jQuery.getJSON('http://publicite.editions-lariviere.fr/ecommerce-publicite/publicite-json.php?callback=?',
                {pubs: tabPub},
                function(data) {
                        jQuery.each(data, function(k,v) {
                                jQuery('#'+k).writeCapture().html(v);
                        });
                }
        );
});

jQuery.fn.extend({
   findPos : function() {
       obj = jQuery(this).get(0);
       var curleft = obj.offsetLeft || 0;
       var curtop = obj.offsetTop || 0;
       while (obj = obj.offsetParent) {
                curleft += obj.offsetLeft
                curtop += obj.offsetTop
       }
       return {x:curleft,y:curtop};
   }
});