IE下JS跨域问题

<script type="text/javascript">

//    document.domain = 'bai.sohu.com';

(function()
{

    

var a = [], n = document.createElement('script');

try {

    a.push('url=' + encodeURIComponent(location.href));

    } catch (e) {

    setTimeout(arguments.callee, 0);

    return;

    }

    a.push('referrer=' + encodeURIComponent(document.referrer));

    n.src = '....pv.gif';

    document.getElementsBy

})();