Uploadify异步上传

    .uploadify-button {
        background-color: transparent;
        border: none;
        padding: 0;
    }
    .uploadify:hover .uploadify-button {
        background-color: transparent;
    }

$(function() {
    $("#file_upload").uploadify({
        'buttonImage' : '/uploadify/browse-btn.png',
        'swf'         : '/uploadify/uploadify.swf',
        'uploader'    : '/uploadify/uploadify.php'
        'button_image_url':'/public/uploadify/browse-btn.png',//这个一定要设置！
    });
});