var _totalImgs = 6;
        var _loadedImg = 0;

        var _imagesUrl = new Array( );
        var _imagesObj = new Array( );

		_imagesUrl[_imagesUrl.length] = "img/portfolio/last1.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last1b.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last2.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last2b.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last3.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last3b.jpg";
		_imagesUrl[_imagesUrl.length] = "img/portfolio/last4.jpg";
        _imagesUrl[_imagesUrl.length] = "img/portfolio/last4b.jpg";
		
        for (var i=0; i<_totalImgs; i++)
        {
          _imagesObj[i]        = new Image( );
          _imagesObj[i].src    = _imagesUrl[i];
          _imagesObj[i].onload = updateImageLoadStatus;
        }


        function updateImageLoadStatus ( __event )
        {
          _loadedImg++;
          window.status = _loadedImg + " su " + _totalImgs + " immagini caricate.";
        }