javascript - Upgrading to jQuery 1.5 has broken my code -

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i have following code make parallax niceness mapped scroll bar. moves both background position of section , elements in section classed "mover"

it works fine jquery 1.4.x when upgraded 1.5.2 elements don't quite original positions

does know changes in 1.5 cause this?

var lastscrolltop = 0   var scrolltop = 0    $(window).scroll(function() {     scrolltop = $(window).scrolltop();     var move = lastscrolltop - scrolltop;     lastscrolltop = scrolltop;       $('.mover').each(function(i, element){         element = $(element);          if(!belowthefold(element)){           var currentpos = parseint(element.css("top"));           var speed = $(this).attr('data-scroll-speed');           var pos = currentpos + (move*speed);           element.css('top', pos);         }       });        $('.background-mover').each(function(i,element){         element = $(element);          if(!belowthefold(element)){           var currentpos = parseint(element.css("background-position-y"));           var speed = element.attr('data-scroll-speed');           var pos = currentpos + (move*speed);           element.css('background-position-y', pos);         }       });     });      function belowthefold(element){       var fold = $(window).height() + $(window).scrolltop();       return fold <= element.offset().top;     }

html:

  <section class="background-mover" data-scroll-speed="0.1" style="background:url(images/background.jpg) no-repeat; /*background-size:cover;*/ ">         <a href="#" class="tag mover" data-scroll-speed="0.5" style="top:410px; left:120px; ">places</a>         <a href="#" class="tag mover" data-scroll-speed="0.2" style="top:200px; left:480px; ">nature</a>         <a href="#" class="tag mover" data-scroll-speed="0.3" style="top:350px; left:650px; ">landscape</a>         <a href="#" class="tag mover" data-scroll-speed="0.8" style="top:580px; left:380px; ">adventure</a>     </section>     <section class="background-mover" data-scroll-speed="0.2" style="background:url('images/background-2.jpg') no-repeat; height:630px; ">         <a href="#" class="tag mover" data-scroll-speed="0.2" style="top:250px; left:90px; ">getting around</a>         <a href="#" class="tag mover" data-scroll-speed="0.5" style="top:420px; left:500px; ">events</a>         <a href="#" class="tag mover" data-scroll-speed="0.3" style="top:640px; left:470px; ">accomodation</a>     </section>      <section class="background-mover" data-scroll-speed="0" style="background:url(images/background-3.jpg) no-repeat; /*background-size:cover;*/ height:1200px; ">         <a href="#" class="tag mover" data-scroll-speed="0.5" style="top:190px; left:300px; ">culture</a>         <a href="#" class="tag mover" data-scroll-speed="0.1" style="top:390px; left:90px; ">must do's</a>         <a href="#" class="tag mover" data-scroll-speed="0.5" style="top:530px; left:600px; ">getting here</a>         <a href="#" class="tag mover" data-scroll-speed="0.2" style="top:680px; left:110px; ">history</a>         <a href="#" class="tag mover" data-scroll-speed="0.8" style="top:830px; left:590px; ">facts</a>     </section>


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