‘;
html += ‘

‘;
data.ad_counter++;
}

if(data.should_append_feed){
document.getElementById(“news_feed”).insertAdjacentHTML(‘beforeend’,html);
//show_ad(data);

}
else {
document.getElementById(“news_feed”).innerHTML = html;
data.should_append_feed = true;
}

data.story_positions = calculate_story_positions();
data.ad_positions = calculate_ad_positions();
}
}

function feed_request_callback(xhr, data) {
return function() {
if(this.readyState == 4 && this.status == 200) {
var now = Math.floor(Date.now() / 1000);

var json = JSON.parse(this.responseText);

data.saved_list.push(json.news_feed);
//console.log(data.saved_list);
//console.log(‘show feed’);
show_list(json.news_feed, data);

try {
sessionStorage.setItem(‘feed_’ + data.options_string, JSON.stringify(data.saved_list));
sessionStorage.setItem(‘feed_date_’ + data.options_string, now);;
}
catch (e) {
if (e == QUOTA_EXCEEDED_ERR) {
sessionStorage.clear();
sessionStorage.setItem(‘feed_’ + data.options_string, JSON.stringify(data.saved_list));
sessionStorage.setItem(‘feed_saved_’ + data.options_string, now);;
}
}
data.loading.style.display = ‘none’;
data.loading_stories = false;
}
};
}

function calculate_story_positions(){
var stories = document.querySelectorAll(“.feed_story”);
var scroll_y = window.scrollY || document.documentElement.scrollTop;

var story_positions = [];
if(stories.length){
var top;
for (var i = 0; i b.position.top ? 1 : 0;
});

for (i = 0; i data.story_positions[i].position.top && data.story_positions[i].position.top>furthest_scrolled_story.position.top){
furthest_scrolled_story = data.story_positions[i];
position_in_list = i;
}
}
}

if(furthest_scrolled_story.id > ” && window.location.hash != ‘#fs_’ + furthest_scrolled_story.id){
if(history.replaceState){
history.replaceState(undefined, undefined, ‘#fs_’ + furthest_scrolled_story.id);
}
}

if(data.story_positions.length – position_in_list data.ad_positions[i].position.top){

show_ad(data.ad_positions[i].id);
data.ad_positions[i] = null;
}
}
}
}

//may switch this to a timeout of 50 for better performance
function scroll_callback(data){
return function(){
data.last_known_scroll_position = window.scrollY || document.documentElement.scrollTop;
if(!data.ticking){
window.requestAnimationFrame(function() {
handleScroll(data.last_known_scroll_position,data);
data.ticking = false;
});
data.ticking = true;
}
};
}

function refresh_callback(data){
return function(event){
event.preventDefault();

data.loading_status.innerHTML = ‘Updating Stories’;
data.loading_svg.style.display = ‘block’;

data.options.offset = 0;
data.should_append_feed = false;
load_stories(data);
};
}

function show_ad(ad_id){
var ad = document.getElementById(ad_id);
ad.setAttribute(‘data-shown’,1);

//console.log(‘yay ad! ‘ + ad_id);
if((‘ ‘ + ad.className + ‘ ‘).indexOf(‘ dfp-square ‘) > -1){
feed_ajax_ad(ad, ‘/15020739/nowmedia_sidebar’, [300, 250], dfp_targeting);
}
else {
if(window.innerWidth ”){
options = JSON.parse(e.getAttribute(‘data-options’));
}
options.offset = 0;
if(typeof options.limit == ‘undefined’){
options.limit = 7;
}
if(typeof options.show_ads == ‘undefined’){
options.show_ads = ‘after’;
}
var options_string = JSON.stringify(options);

var data = {
options_string: options_string,
options:options,
ticking: false,
saved_list: [],
loading: document.getElementById(‘news_feed_loading’),
loading_status: document.getElementById(‘news_feed_loading_status’),
loading_svg: document.getElementById(‘news_feed_svg’),
ad_counter: 0,
last_known_scroll_position: 0,
loading_stories: false,
story_positions: [],
ad_positions: [],
should_append_feed: true,
url: window.location.pathname
};

var saved_list = sessionStorage.getItem(‘feed_’ + options_string);
var saved_date = sessionStorage.getItem(‘feed_date_’ + options_string);
//if there are saved stories, and there’s a hash in the url, indicating scrolling down the page
if(window.location.hash && saved_list != null && saved_date != null){
//console.log(‘load new stories’);
saved_list = JSON.parse(saved_list);
data.loading.style.display = ‘block’;

for (i = 0; i (60*5)){
data.should_append_feed = false;
data.options.offset = 0;
data.saved_list = [];
load_stories(data);
}
else {
//console.log(‘show_saved_stories’);
data.loading.style.display = ‘none’;
setTimeout(function(){
data.loading_status.innerHTML = ‘Click to Check for New Stories’;
data.loading_svg.style.display = ‘none’;
data.loading.style.display = ‘block’;
}, 240000);
}
//load_stories(data);

//may want to also do this for stories
window.addEventListener(‘load’, update_ad_positions(data));
setTimeout(function(){
update_ad_positions(data);
}, 3000);

window.addEventListener(‘scroll’, scroll_callback(data));

data.loading.addEventListener(‘click’, refresh_callback(data));

return true;
}

return false;
}

//only show ads if should_append_feed is true

init_feed(‘news_feed’);

//}