parallax.js

jQuery(function( $ ){

    // Enable parallax and fade effects on homepage sections
    $(window).scroll(function(){


        scrolltop = $(window).scrollTop()
        scrollwindow = scrolltop + $(window).height();

        //$(".home-top-wrap").css("backgroundPosition", "0px " + -(scrolltop/6) + "px");

         if( scrollwindow > $(".home-top-wrap").offset().top ) {

            // Enable parallax effect
             backgroundscroll = scrollwindow - $(".home-top-wrap").offset().top;
             $(".home-top-wrap").css("backgroundPosition", "0px " + -(backgroundscroll/6) + "px");

         }

         if( scrollwindow > $(".home-last-wrap").offset().top ) {

            // Enable parallax effect
             backgroundscroll = scrollwindow - $(".home-last-wrap").offset().top;
             $(".home-last-wrap").css("backgroundPosition", "0px " + -(backgroundscroll/6) + "px");

         }


    });

});