var PGGallery = new HttpClient();
    PGGallery.isAsync = true;
    PGGallery.callback = function(result) { 
	                                     document.getElementById('PGGallery').innerHTML = result;
									   }
    function replacePGGallery(page)   {
	                                    PGGallery.makeRequest(page,null);
                                       }