scroll - Floating menu bars sticks to top when scrolling up, the one replaces the other jquery -

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the other day found javascript code, , i'm not @ javascript need help. issue make website kind of instagram app. have made example pictures.

http://i.imgur.com/tidi2ct.jpg

imagine picture left first, middle second, , right third.

at website have top logo, , when header 1 reaches top stays @ top. found code this, need when scroll, header 2 pushes header 1 away or moves in front of header 1.

this code found, doesn't work when have more 1 bars should fixed @ top when reaches top.

thanks

    $(window).scroll(function(e)      var scroller_anchor = $(".scroller_anchor").offset().top;          if ($(this).scrolltop() >= scroller_anchor && $('.scroller').css('position') != 'fixed')          {               $('.scroller').css({                 'background': 'white',                 'position': 'fixed',                 'top': '0px'             });              $('.scroller_anchor').css('height', '50px');         }          else if ($(this).scrolltop() < scroller_anchor && $('.scroller').css('position') != 'relative')          {                    $('.scroller_anchor').css('height', '0px');              $('.scroller').css({                 'background': 'white',                 'position': 'relative'             });         }     });

i think problem each menu bar has have it's top offset tracked separately.

here simple solution believe @ least similar you're looking for:

http://jsfiddle.net/42yuz/

the code:

jquery

$(document).ready(function(e) { var menutop1pos = $('#menutop1').offset().top; var menutop2pos = $('#menutop2').offset().top;  var sticktotop = function(){     var winscrolltop = $(window).scrolltop();      if (winscrolltop >= menutop1pos) {             $('#menutop1').addclass('sticktop1st');     } else {             $('#menutop1').removeclass('sticktop1st');       }      if (winscrolltop >= menutop2pos) {               $('#menutop2').addclass('sticktop2nd');     } else {             $('#menutop2').removeclass('sticktop2nd');       } };  sticktotop();  $(window).scroll(function() {         sticktotop(); }); });

css

.sticktop1st {     position:fixed;     top:0px;     z-index:998;     background-color:white; }  .sticktop2nd {     position:fixed;     top:0px;     z-index:999;     background-color:white; }

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