var draggable_config = { 
    helper: function(ev) {
        var obj = $(ev.currentTarget);
        var img = $('.image img', obj);
        return $('<img width="50" height="50" src="' + img.attr('src') + '" />');
    },  
    zIndex: 20, 
    cursorAt: {top: 0, left: 0}
    /*  
    start: function(ev, ui) {
        $('.review-photo').css('overflow-y', 'hidden');
        $(this).fadeTo(0, 0.5);
    },  
    stop: function(ev, ui) {
        $('.review-photo').css('overflow-y', 'auto');
        $(this).fadeTo(0, 1); 
    }   
    */  
}