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jQuery(document).ready(function($){
var offset = 1250;
var duration = 800;
jQuery(window).scroll(function() {
if (jQuery(this).scrollTop() > offset) {
jQuery('.back-to-top').fadeIn(duration);
} else {
jQuery('.back-to-top').fadeOut(duration);
}
});
jQuery('.back-to-top').click(function(event) {
event.preventDefault();
jQuery('html, body').animate({scrollTop: 0}, duration);
return false;
})
// alertbar later
$(document).scroll(function () {
var maxScroll = $(document).height() - $(window).height();
var y = $(this).scrollTop();
if (y > 350 || y + 100 > maxScroll) {
$('.alertbar').fadeIn();
} else {
$('.alertbar').fadeOut();
}
});
// Smooth on external page
$(function() {
setTimeout(function() {
if (location.hash) {
/* we need to scroll to the top of the window first, because the browser will always jump to the anchor first before JavaScript is ready, thanks Stack Overflow: http://stackoverflow.com/a/3659116 */
window.scrollTo(0, 0);
target = location.hash.split('#');
smoothScrollTo($('#'+target[1]));
}
}, 1);
// taken from: https://css-tricks.com/snippets/jquery/smooth-scrolling/
$('a[href*=\\#]:not([href=\\#])').click(function() {
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
smoothScrollTo($(this.hash));
return false;
}
});
function smoothScrollTo(target) {
target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
if (target.length) {
$('html,body').animate({
scrollTop: target.offset().top
}, 1000);
}
}
});
// Hide Header on on scroll down
var didScroll;
var lastScrollTop = 0;
var delta = 5;
var navbarHeight = $('nav').outerHeight();
$(window).scroll(function(event){
didScroll = true;
});
setInterval(function() {
if (didScroll) {
hasScrolled();
didScroll = false;
}
}, 250);
function hasScrolled() {
var st = $(this).scrollTop();
// Make sure they scroll more than delta
if(Math.abs(lastScrollTop - st) <= delta)
return;
// If they scrolled down and are past the navbar, add class .nav-up.
// This is necessary so you never see what is "behind" the navbar.
if (st > lastScrollTop && st > navbarHeight){
// Scroll Down
$('nav').removeClass('nav-down').addClass('nav-up');
$('.nav-up').css('top', - $('nav').outerHeight() + 'px');
} else {
// Scroll Up
if(st + $(window).height() < $(document).height()) {
$('nav').removeClass('nav-up').addClass('nav-down');
$('.nav-up, .nav-down').css('top', '0px');
}
}
lastScrollTop = st;
}
//$('.site-content').css('margin-top', $('header').outerHeight() + 'px');
});
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