$(window).load(function() {
    $('.section > .header .title span').each(function() {
        var offset = $(this).offset();
        $(this).css('background-position', '-' + calculatePosition(offset.left) + 'px -' + offset.top + 'px');
        
        if (offset.top >= 1200) {
            $(this).css('background', "url(/clients/taylor_swift_new/img/bg.jpg)");  
        }
    });
});

function calculatePosition(pixels) {
    var left,
        windowWidth = $(window).width();
        pageWidth = 940;
    
    if (windowWidth >= pageWidth) {
        var derp = ((windowWidth - pageWidth)/2);
        left = (pixels - derp) + 323;
    } else {
        left = pixels;
    }
    return left;
}