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How to adjust page to scroll to center on clicking on carousel?

I'm trying to get it so that when you click on the carousel, the page will adjust to have the carousel in the center. This website (http://studionewwork.com/) shows this when you click on their carousel. I'm still learning about Jquery so I'm not yet adept at commands yet.
http://jsfiddle.net/8bJUc/614/
$(document).ready(function () {
$("#owl-demo").owlCarousel({
navigation: true,
pagination: true,
lazyLoad: true
});
});
$('.owl-demo').on('click', function(e) {
var el = $( e.target.getAttribute('href') );
var elOffset = el.offset().top;
var elHeight = el.height();
var windowHeight = $(window).height();
var offset;
if (elHeight < windowHeight) {
offset = elOffset - ((windowHeight / 2) - (elHeight / 2));
}
else {
offset = elOffset;
}
var speed = 700;
$('html, body').animate({scrollTop:offset}, speed);
});

Hey I updated your fiddle to make it work: http://jsfiddle.net/8bJUc/649/
Basically you are using $(".owl-demo") as if it's a class, but it's an ID. Then the onClick function tries to get the clicked element but fails doing so.
var el = $( e.target.getAttribute('href') );
This line basically says:
Get the href-attribute from the clicked element and use jQuery to locate any elements matching the href attribute. I removed this since you don't specify the href attribute anywhere.
$('.owl-carousel').on('click', function(e) {
var el = $(".lazyOwl", this);
var elOffset = el.offset().top;
var elHeight = el.height();
var windowHeight = $(window).height();
var offset;
if (elHeight < windowHeight) {
offset = elOffset - ((windowHeight / 2) - (elHeight / 2));
}
else {
offset = elOffset;
}
var speed = 700;
$('html, body').animate({scrollTop:offset}, speed);
});
Please note that the example carousel you posted doesn't work as expected on my Macbook Air 11''. The carousel jumps around whenever I click on it.

Set top of page to 340px from top with jQuery

Currently I have a script which starts a progress bar the moment a user starts scrolling.
Is it possible to change this to when the user gets to 340px from the top of the page?
Here is a demo of my site: http://pixsols.com/test/wordpress/reading-progress/
Here is my current code:
(function ( $ ) {
$.fn.progressScroll = function(options) {
var settings = $.extend({
fontSize : 20,
color : '#009ACF',
height : '5px',
textArea : 'dark',
}, options);
// element state info
var docOffset = $(this).offset().top,
elmHeight = $(this).height(),
winHeight = $(window).height();
// listen for scroll changes
$(window).on('scroll', function() {
var docScroll = $(window).scrollTop(),
windowOffset = docOffset - docScroll,
viewedPortion = winHeight + docScroll - docOffset;
if($(window).scrollTop() > 0) {
if($('.scrollWrapper').hasClass('hidden')) {
$('.scrollWrapper').removeClass('hidden').hide();
$('.scrollWrapper').slideDown('slow');
}
} else {
$('.scrollWrapper').slideUp('slow');
$('.scrollWrapper').addClass('hidden');
}
if(viewedPortion < 0) { viewedPortion = 0; }
if(viewedPortion > elmHeight) { viewedPortion = elmHeight; }
// calculate viewed percentage
var viewedPercentage = viewedPortion / elmHeight;
// set percent in progress element
$('.scroll-bar').css('width', (viewedPercentage*100)+'%' );
});
var self = this;
$(window).on('resize', function() {
docOffset = $(self).offset().top;
elmHeight = $(self).height();
winHeight = $(window).height();
$(window).trigger('scroll');
});
$(window).trigger('scroll');
var $el = $('.scroll-bar').css(settings);
return $el;
};
}( jQuery ));

My guess would be to manipulate this:
windowOffset = docOffset - docScroll,
Probably you should add or subtract 320px from windowOffset. So for example"
windowOffset = docOffset - docScroll + 320,

Javascript FadeIn code add more classes

Im new in Javascript, Im sorry for the armature questions
i have a fadein code only for one class that works perfect, here is the code:
jQuery(document).ready(function($) {
var fadeinbig = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.fadeinbig').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('fadeinbig')) {
$(this).removeClass('fadeinbig');
}
});
}
fadeinbig();
$(window).on('scroll resize', fadeinbig);
I would like to add some more classes like, fadeinleft, fadeinright, etc.
like this:
jQuery(document).ready(function($) {
var fadeinbig = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.fadeinbig').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('fadeinbig')) {
$(this).removeClass('fadeinbig');
}
});
}
fadeinbig();
$(window).on('scroll resize', fadeinbig);
});
jQuery(document).ready(function($) {
var faidinbottom = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.faidinbottom').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('faidinbottom')) {
$(this).removeClass('faidinbottom');
}
});
}
faidinbottom();
$(window).on('scroll resize', faidinbottom);
});
jQuery(document).ready(function($) {
var faidintop = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.faidintop').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('faidintop')) {
$(this).removeClass('faidintop');
}
});
}
faidintop();
$(window).on('scroll resize', faidintop);
If you ask me why my code is with removeClass, not with addClass, it is becouse it is easer for me to manipulate whit my content, without changing the base css styles of my website. I just add some classes "faidintop, faidinbottom etc." to the style sheet, then to the class of a div, and the magic happens.
I will be very grateful if some one could help me whit this, or at least give me some directions, how to do it the right way.

How use sidebar position when scoll up

I have a 2 column layout. The left column is way longer than the sidebar. I want the sidebar only to stick when its bottom reaches the bottom of the browser window. So the user can continue to scroll down the left column content while the right sidebar sticks.. how use jquery and javascipt
$(function() {
var $window = $(window);
var lastScrollTop = $window.scrollTop();
var wasScrollingDown = true;
var $sidebar = $("#sidebar");
if ($sidebar.length > 0) {
var initialSidebarTop = $sidebar.position().top;
$window.scroll(function(event) {
var windowHeight = $window.height();
var sidebarHeight = $sidebar.outerHeight();
var scrollTop = $window.scrollTop();
var scrollBottom = scrollTop + windowHeight;
var sidebarTop = $sidebar.position().top;
var sidebarBottom = sidebarTop + sidebarHeight;
var heightDelta = Math.abs(windowHeight - sidebarHeight);
var scrollDelta = lastScrollTop - scrollTop;
var isScrollingDown = (scrollTop > lastScrollTop);
var isWindowLarger = (windowHeight > sidebarHeight);
if ((isWindowLarger && scrollTop > initialSidebarTop) || (!isWindowLarger && scrollTop > initialSidebarTop + heightDelta)) {
$sidebar.addClass('fixed');
} else if (!isScrollingDown && scrollTop <= initialSidebarTop) {
$sidebar.removeClass('fixed');
}
var dragBottomDown = (sidebarBottom <= scrollBottom && isScrollingDown);
var dragTopUp = (sidebarTop >= scrollTop && !isScrollingDown);
if (dragBottomDown) {
if (isWindowLarger) {
$sidebar.css('top', 0);
} else {
$sidebar.css('top', -heightDelta);
}
} else if (dragTopUp) {
$sidebar.css('top', 0);
} else if ($sidebar.hasClass('fixed')) {
var currentTop = parseInt($sidebar.css('top'), 10);
var minTop = -heightDelta;
var scrolledTop = currentTop + scrollDelta;
var isPageAtBottom = (scrollTop + windowHeight >= $(document).height());
var newTop = (isPageAtBottom) ? minTop : scrolledTop;
$sidebar.css('top', newTop);
}
lastScrollTop = scrollTop;
wasScrollingDown = isScrollingDown;
});
}
});
SeeDemo
i have this error when scroll top
i wanted this style

$(window).resize(): Before

Is it possible of getting the width/height of browser each time BEFORE the resize() is triggered?
$(window).resize(function() {
});
This is due to I'm calculating the difference before/after browser has resize().

You would have to store the previous value, a little like this
var prevHeight = 0;
var prevWidth = 0;
$(document).ready(function() {
prevHeight = $(window).height();
prevWidth = $(window).width();
});
$(window).resize(function() {
var currentHeight = $(window).height();
var currentWidth = $(window).width();
//do difference stuff
prevHeight = currentHeight;
prevWidth = currentWidth;
});