function backgroundPos() {
    if (document.body.clientWidth > 2000) {
        $('.bkgInterna').removeClass('bkgCenter');
    } else {
        $('.bkgInterna').addClass('bkgCenter');
    }
};
var resizeTimer = null;

$(document).ready(function () {
    backgroundPos();

    $(window).bind('resize', function () {
        if (resizeTimer) clearTimeout(resizeTimer);
        resizeTimer = setTimeout(backgroundPos, 100); 448

    });
});