function _imageMaxSize(){
    var _class = 'body';        // holder
    var _w = 479;                // width image
    var _box = document.getElementsByTagName('div');
    for (var i = 0; _box.length; i++) {
        if (_box[i].className.indexOf(_class) != -1) {
            var _image = _box[i].getElementsByTagName('img');
            for (var j = 0; _image.length; j++) {
                if (_image[j].offsetWidth > _w) _image[j].style.width = (_w + 'px');
            }
        }
    }
}
if (window.addEventListener) window.addEventListener("load", imageMaxSize, false);
else if (window.attachEvent) window.attachEvent("onload", imageMaxSize);