Im trying to close this ad banner from webpage.. please Help..

<div id="hiddenBannerCanvas"></div>
    <div id="bannerInCenter">

        <a href="http://record.bettingpartners.com/_8tAZwUrL2Ja3jsFw_KD1gyyZw0gXuLb7/0/" target="_new"><img src="http://media.bettingpartners.com/GIF/Bovada/Sports/F1/300x250.gif" /></a>
        <span id="bannerClose" class="closebet">->-X-<-</span>

    </div>