gistfile1.txt

var photos = $(document).getElementsByClassName('user_photo');
$A(photos).each( function(e){
    var gift = gifts[e.readAttribute('user_id')];
    if(!gift) return;
    var oy = e.getHeight() - gift['offset_y'], ox = 0 - gift['offset_x'];
    var gi = new Element('img', {'class':'gift',
        'height':'29px','width':'40px',
        'style':'position:absolute;margin-top:'+oy+'px;margin-left:'+ox+'px;'
    });
    gi.src = gift['url'];
    gi.png_fix();
    Element.insert(e, {top:gi});
})