$(document).ready(function() {

    //Call method for first time page is loaded
    MiniProductAddSetup();

    //Call method for each async postback
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(MiniProductAddSetup);
});

function MiniProductAddSetup() {
    var height = $('.miniproductadd_tablewrap').height();
    var width = $('.miniproductadd_tablewrap').width();
    $('.miniproductadd_blackout').height(height);
    $('.miniproductadd_blackoutinner').css({ top: (height - 19) / 2, left: (width - 220) / 2 });
}

function ShowMiniProductAddLoadingPanel(item)
{
    $('[name=' + item._uniqueId + ']').parents('.miniproductadd_tablewrap').find('.miniproductadd_blackout').show();
}