javascript ads / iframe ads in an asp:adrotator

Question

Is this supported at all or do I need to build a custom control?

End goal is an XML file of javascript ads that the adrotator picks from.

                    <script type="text/javascript"><!--
                        google_ad_client = "pub-xxxxxxxxxxxxxxxxxxx";
                        google_ad_slot = "xxxxxxxxxx";
                        google_ad_width = 180;
                        google_ad_height = 150;
                        //-->
                        </script>
                        <script type="text/javascript"
                        src="http://pagead2.googlesyndication.com/pagead/show_ads.js"&gt;
                    </script>