function registerLoading(a, d) {

    var div = '<div id="' + d + '" class="modal"><div class="imodal"><img src="/images/ajax-loader.gif" alt="Centres Stop" /><a class="' + a + '"></a></div></div>';

    //alert(div);
    
    $('body').append(div);

    $('div#'+d).ntr$modal('.'+a);

    var isPoped = false;

    function cm() {
        //alert('cm ' + isPoped);
        if (isPoped) {
            $('a.' + a).click(); /* simulate click to close */
            isPoped = false;
        }
        rb();
    }

    function pb() {
        //alert('pb');
        isPoped = true;
        __doPostBack(this.name, '');
        
    }

    function rb() { $('input.' + a).click(pb); }

    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(cm);
    rb();
}