SharePoint Post back to work after clicking on export documents

For use below code in .ascx page automatically post back document download link

<script type="text/javascript" language="javascript">
    //sharepoint postback to work after clicking on export to pdf
    if (typeof (_spBodyOnLoadFunctionNames) != 'undefined' && _spBodyOnLoadFunctionNames != null) {
        _spBodyOnLoadFunctionNames.push("supressSubmitWraper");
    }
    function supressSubmitWraper() {
        _spSuppressFormOnSubmitWrapper = true;
    }
</script>