[Theme: Fifteen] Footer broken by agoda search box

Hi,
I am willing to display an Agoda searchbox in the sidebar. I put the js code provided by Agoda in the widget HTML javascript adder and published in the side bar.
Doing so well displays the agoda search box but fully disturbs the display of the footer content : the content of the footer moves up…in the side bar !
Putting the agoda box in the footer instead of the sidebar is not better ..
Has anyone any idea to fix this ?
See example here : click here to get to the site.

<div id="SearchBox">?</div>
 <script
src="https://ajaxsearch.partners.agoda.com/partners/SearchBox/Scripts/Ago
da.SearchBoxV2.1.js" type="text/javascript"></script> 

<script type="text/javascript">
 var AgodaSearch = new AgodaSearchBox({
 cid: 9999999,
 filterCityName: 'Nha Trang',
 fixedCityName: false,
 fixedCityNameVisible:true,
 hotelID: '',
 checkInDateBefore:14,
 night:2,
 language:2,
 currencyCode: 'EUR',
 newWindow: false,
 header: '',
 footer: '',
 style: 'style3',
 Element: 'SearchBox'
 });
 </script>
<!-- Default,CmsLandin</a>