I have created a parallax scroll, which seem to be working fine in firefox however in the chrome browser there's a slight jump on the body text when scrolling. click here scroll to the about section. I am not sure if t this is a css or JS issue.. below is a snippet i have incorporated into my parallax function

Does anyone know how i an fix this issue?

$(document).ready(function(){

// Cache the Window object
$window = $(window);

// Cache the Y offset and the speed of each sprite
$('[data-type]').each(function() {  
    $(this).data('offsetY', parseInt($(this).attr('data-offsetY')));
    $(this).data('Xposition', $(this).attr('data-Xposition'));
    $(this).data('speed', $(this).attr('data-speed'));
});

// For each element that has a data-type attribute
$('[data-type="background"]').each(function(){


    // Store some variables based on where we are
    var $self = $(this),
        offsetCoords = $self.offset(),
        topOffset = offsetCoords.top;


    // When the window is scrolled...
    $(window).scroll(function() {

        // If this section is in view
        if ( ($window.scrollTop() + $window.height()) > (topOffset) &&
             ( (topOffset + $self.height()) > $window.scrollTop() ) ) {

            // Scroll the background at var speed
            // the yPos is a negative value because we're scrolling it UP!                              
            var yPos = -($window.scrollTop() / $self.data('speed')); 

            // If this element has a Y offset then add it on
            if ($self.data('offsetY')) {
                yPos += $self.data('offsetY');
            }

            // Put together our final background position
            var coords = '50% '+ yPos + 'px';

            // Move the background
            $self.css({ backgroundPosition: coords });

           $('[data-type="scroll-text"]', $self).each(function() {
                    v
javascript jquery css google-chrome webkit
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