160x600 - Fixed Scroll Snippet

    jQuery(document).ready(function() {

    var el=$('#skyL');
  //  var originalelpos=el.offset().top;
var originalelpos= 400;  // take it where it originally is on the page

    //run on scroll
     $(window).scroll(function(){
        var el = $('#skyL'); // important! (local)
        var elpos = el.offset().top; // take current situation
        var windowpos = $(window).scrollTop();
        var finaldestination = windowpos+originalelpos;
        el.stop().animate({'top':finaldestination},500);
     });




    });