Browser is not defined

Hi

Since I upgraded to the last version of contao, the Flash banner of my site doesn't display and Firebug says "Browser is not defined".
Here is the code that generates the error :

Code:

---

<script type="text/javascript">
<![CDATA[//><!--
if (Browser.Plugins.Flash.version > 0) {
  new Swiff("tl_files/peyrichou/flash_header_mini.swf", {
    id: "swf_44",
    width: 360,
    height: 133,
    params : {
      allowFullScreen: true,
      flashvars: "URL=http://contao.dev.acao.fr/"
    },
    container: $('swf_44_container')
  });
}
//--><!]]>
</script>

---

To which library belongs the Browser object ?

Thank you for your help

Aïda

I think I found the problem. I'm using jQuery for several things in the site and therefore I got rid of mootools (to which I guess the Browser object belongs).
Am I compelled to use Mootools ?

I found a solution : jQuery.noConflict();

I'll try it.