[jQuery] Adverts destroy my JavaScript

[jQuery] Adverts destroy my JavaScript


Hi there,
I noticed a problem while including layer-ads. Firebug says
"$("body") has no properties"
HTML:
<script type="text/javascript" src="{$path_js}plugins/jquery.js"></
script>
<script type="text/javascript" src="{$path_js}ajax.js"></script>
<script type="text/javascript" src="{$path_js}logoutScreen.js"></
script>
<script type="text/javascript" src="http://www.sponsorads.de/
script.php?s=116298"></script>
logoutScreen.js:
var Countdown = {
    timer: 15,
    stepSpeed: 1000,
    initialize: function () {
        if (!$("body").length) {
            window.setTimeout("Countdown.initialize()", 500);
            return;
        }
        $("body").append('<div id="logoutBox"></div><div id="toPortal"><span
id="countDownLine"><span id="countDownNumber">15</span> seconds until
logout</span></div>');
        window.setTimeout("Countdown.step()", this.stepSpeed);
    },
    ...
...
};
$(function() {
    Countdown.initialize();
});
-------------------------------------
How may I avoide this? I tried things like $.getScript() but it
doesn't work (and the ad-company doensn't allow it anyway).
Any Ideas?
Eric Teubert