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Javascript, jQuery | Type: JavascriptFix to Top Onscroll

Positions element at top on scrolling using jQuery scrollTop

<script>
jQuery(function ($) {
$(window).scroll(function(){
    var scroll = $(window).scrollTop();
    if (scroll >= 279){
         $('.scroller').css({position:'fixed',top:15,width:160});
    } else {
         $('.scroller').css({position:'relative',top:0});
    }
});
});
</script>

//for object with class "scroller"; also note define object width for fixed, as it seems to disregard previously set width.