Hide the standard AddThis tooltip and images

AddThis always places its standard images and tooltips on share buttons. I want to completely customize AddThis, and hide tooltips and images. Because I want to load my bouncing images by my JavaScript and no tooltips. I set the following config to prevent standard CSS of AddThis.

<script type="text/javascript">var addthis_config = {ui_use_css: false}</script>

But how to prevent tooltips and images? I know, that when you set your own title and img attributes, it shows yours instead of the standard AddThis title/image, but I want to completely hide tooltips and images. As I said, all images will be loaded by my script:

<a class="addthis_button_facebook" title=" ">Facebook</a>

It does not work.