Image loader is not spinning in IE

 Can anyone help on this??

 $('#imgPolicyDocument').click(function () {
                overlay = $('<div></div>').prependTo('body').attr('id', 'divOverlayLoading');
                center($('#Loadingdialog'));
                $('#Loadingdialog').show();
                document.body.style.overflow = 'hidden';
});

 <div id='Loadingdialog' class="LoaderMainclass">
            <div class="LoaderImgCarrier">
                <img src="../css/images/ajax-loader.gif" alt="Loading" />
            </div>
    </div>