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fixed navbar issue after resize to page

I have a page if you click you are gonna see demo page and there is a fixed menu which is hidden.
after scroll page to down you'll see fixed menu set as display:block as you see on image:
but after appear if I'm resizing to window and if I turn normal desktop mode after scroll page to up as you see my fixed menu is not hiding
and another problem is if you open page mobile emulator (like on this emulator)[http://mobiletest.me/google_nexus_7_emulator/?u=http://firatabak.com/test/tur_detay.html] normally menu has to be show when I scroll page to down but it's not.
JS CODE
var navOffset = jQuery(".after-scroll-sticky").offset().top;
jQuery(window).scroll(function(){
var scrollPosition = jQuery(window).scrollTop();
if(scrollPosition >= navOffset){
jQuery(".sticky-navbar").fadeIn().addClass("fixed");
}else{
jQuery(".sticky-navbar").fadeOut().removeClass("fixed");
}
});
if ($(window).width() < 768) {
var navOffset2 = jQuery(".after-scroll-sticky").offset().top+200;
jQuery(window).scroll(function(){
var sP = jQuery(window).scrollTop();
if(sP >= navOffset2){
$(".sticky-navbar").addClass("fadeOutRightBig");
$(".menu-btn").fadeIn("fast");
}else{
$(".sticky-navbar").removeClass("fadeOutRightBig");
$(".menu-btn").fadeOut("slow");
}
});
}

Since you're defining the second jQuery.scroll function within an if statement, it only becomes active if the window width is less than 768px at the moment the script runs - it doesn't kick in when the window is resized. Instead you could try this format:
jQuery(window).scroll(function(){
if ($(window).width() < 768) {
// calculations and animation go here
}
});
Or better yet, combine the two jQuery.scroll functions together:
jQuery(window).scroll(function(){
var navOffset = jQuery(".after-scroll-sticky").offset().top,
scrollPosition = jQuery(window).scrollTop();
if ($(window).width() < 768) {
if (scrollPosition >= navOffset + 200) {
// ...
} else {
// ...
}
else if (scrollPosition >= navOffset) {
// ...
} else {
// ...
}
});
Then just make sure that you're undoing the changes made in other cases before applying the new changes.

Scroll down then fixed navigation glitch

I have this glitch that is bothering me. The problem is that my navigation is not working properly as I wanted it to be. It jumps even though I have not reached the top of my nav or after passing the height of my header with scrollTop value. I recreate the problem in jsfiddle.
var header_height = $('header').height();
//var main_nav = $('nav');
$(document).scroll(function () {
if ($(this).scrollTop() >= header_height) {
$('nav').addClass("fixed");
} else {
$('nav').removeClass("fixed");
}
});

Instead of taking the height of header, you should be taking the top of .main_nav to compare with ScrollTop.
Change the first line in the code you posted above to:
var header_height = $('.main_nav').position().top;
That should work. Here is the working fiddle.
Hope this helped.

fixed menu that is fixed after scrolling past a div

I am creating a fixed position sub-nav menu bar for a responsive site. All the examples I can find of a fixed menu that sticks to top after scrolling are based on a set number of pixels from top.
However, since I am working a responsive site the pixels from top where I need the menu to come in are different based on viewport (on small screens, the menu should appear after more area scrolled down because the content fills are taller area of screen).
I have a working example and am using the following jquery script:
$(document).ready(function(){
$('#navigation a, #fixedbar a').on('click', function(e) {
e.preventDefault();
});
$(window).on('scroll',function() {
var scrolltop = $(this).scrollTop();
if(scrolltop >= 215) {
$('#fixedbar').fadeIn(250);
}
else if(scrolltop <= 210) {
$('#fixedbar').fadeOut(250);
}
});
});
As you can see the fixed bar fades in if more than 215 pixels scrolled from the top. Instead I'd like to have it appear after scrolling past a certain div. That way I know it will come in after user has fully scrolled past the intro text.
Here's my fiddle
Any good examples out there of what I want to do? Or easy way to modify the jquery script? Thanks in advance.

This modification will make it fade in after it passes the static nav
DEMO
var $nav = $("#navigation");
if(scrolltop >= $nav.offset().top + $nav.height()) {
$('#fixedbar').fadeIn(250);
}
else {
$('#fixedbar').fadeOut(250);
}

Demo http://jsfiddle.net/EHhQE/1/
You need to fade out and fade in the navigation when the scroll reaches the bottom and the top of the navigation bar respectively.
var topOfDiv = $('#navigation').position().top;
var bottomOfDiv = $('#navigation').position().top+$('#navigation').outerHeight(true);
And fetched in your code:
$(document).ready(function(){
$('#navigation a, #fixedbar a').on('click', function(e) {
e.preventDefault();
});
$(window).on('scroll',function() {
var scrolltop = $(this).scrollTop();
var topOfDiv = $('#navigation').position().top;
var bottomOfDiv = $('#navigation').position().top+$('#navigation').outerHeight(true);
if(scrolltop >= bottomOfDiv) {
$('#fixedbar').fadeIn(250);
}
else if(scrolltop <= topOfDiv) {
$('#fixedbar').fadeOut(250);
}
});
});

$(document).ready(function ()
{
slider();
});
$(window).scroll(function ()
{
slider();
});
function slider()
{
if (document.body.scrollTop > 208)
$('#fixedMenu').fadeIn(0);
else
$('#fixedMenu').fadeOut(0);
}

Flickering element on fixed sidebar on top scroll using offset

I'm trying to create a fixed sidebar menu. Everything works fine but the sidebar element is flickering once you scroll to the top if you had scroll below.
var windowHeight = $(window).height();
var headerHeight = $('.js-site-header').outerHeight();
var sidebarThreeBlocks = (windowHeight-headerHeight)/3;
var sidebarTwoBlocks = (windowHeight-headerHeight)/2;
var sidebar = $('.js-sidebar');
$('.js-triple-nav a').css({height: sidebarThreeBlocks});
$('.js-double-nav a').css({height: sidebarTwoBlocks});
if (!!sidebar.offset()) {
$(window).scroll(function(){
var stickyTopSidebar = sidebar.offset().top;
var windowTop = ($(window).scrollTop())+headerHeight;
if (stickyTopSidebar < windowTop) {
sidebar.css({ top: windowTop });
}
else {
sidebar.css({ top: '3.125em' });
}
});
}
I used to put the var stickyTopSidebar = sidebar.offset().top; above with all the other variables but I would always get an error on the javascript console as it seemed the variable was undefined. Even so, the sidebar then worked perfectly, with no flickers but all the rest of javascript wouldn't work. Any hints or help?

How do I get the sidebar to move up

I have this page and I want the sidebar to slide down with the user and it works well but if you are on a small screen like 1024 * 768 you will not see the bottom. Here is some of the code I used to make the sidebar work. Any suggestions on how I can change this behavior.
$(window).scroll(function(){
sidebar_position();
});
$(window).resize(function(){
sidebar_position();
});
function sidebar_position(){
var w_width = ($(window).width() -1000) /2;
$('#sidebar').css('left', w_width);
var sidebar_height = $('#sidebar').outerHeight();
var content_height = $('#widecolumn').outerHeight();
var w_height = $(window).height();
if ( sidebar_height > w_height) {
$('#sidebar').css('position', 'absolute');
} else {
$('#sidebar').css('position', 'fixed');
};
if (sidebar_height > content_height) {
content_height = sidebar_height;
$('#widecolumn').css('min-height', content_height);
};
if($.browser.msie && $.browser.version == 6 ){
$(window).scroll(function(){
$('#sidebar').css({
top: $(window).scrollTop()
});
})
}
}
I am sort of lost of what to do next....and how to fix this

Hm small screens are a problem either way since the sidebar is almost 600 px high so on netbooks it probably won't fit in the browser window at all.
But you could leave the sidebar on position absolute until the sidebar reaches the top when scrolling and then switch to position fixed so it stays at the top of the screen.
That way it will use the available screen height