$(window).load(function(){
    var totalHeight = $(window).height();
    var popupHeight = $('#popup').height();
    var totalWidth = $('#content_wrapper').width();
    var popupWidth = $('#popup').width();

    var topPadding = Math.round((totalHeight - popupHeight)/2);
    var leftPadding = Math.round((totalWidth - popupWidth)/2);

    var mainContainerHeight = $('#popup').height()+50;
    //if( popupHeight > 0 ){ $('#content_wrapper').css('height', mainContainerHeight); }

    $('#popup').css('left', (leftPadding-10));
    //alert(totalWidth);

    $('#popup').fadeIn('slow');

    $('#cancel').click(function(){
        $('#popup').fadeOut('slow');
        return false;
    });
})