Editing Pop-up ad (section)

==Pop-up blocking==
Web development and design technologies allow an author to associate any item on a pop-up with any action, including with a cancel or innocent-looking button. Because of bad experiences and apprehensive of possible damage that they may cause, some users do not click on or interact with any item inside a pop-up window whatsoever,<ref name="Smart Computing Article - Pop-ups"/> and may leave the site that generated them or block all pop-ups.

[[Opera (web browser)|Opera]] was the first major [[Web browser cache|browser]] to incorporate tools to block pop-up ads; the [[Mozilla Application Suite|Mozilla]] browser later improved on this by blocking only pop-ups generated as the page loads.{{citation needed|reason=Changelogs at http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.1.html and http://www.opera.com/docs/changelogs/windows/700b1/ indicate that Mozilla first introduced the pop-up blocker on Sept. 23, 2002, while Opera introduced it on Nov. 13, 2002 (both beta software)|date=August 2016}}  In the early 2000s, all major web browsers except [[Internet Explorer 7|Internet Explorer]] let users block unwanted pop-ups almost completely. In 2004, Microsoft released [[Windows XP]] SP2, which added pop-up blocking to Internet Explorer.<ref>{{cite news|last=Naraine|first=Ryan|title=Windows XP SP2 Turns 'On' Pop-up Blocking|url=http://www.internetnews.com/dev-news/article.php/3327991|date=March 18, 2004|access-date=8 August 2013}}</ref> Most modern browsers provide pop-up blocking tools; third-party tools add other features, such as [[ad filtering]].

===Fake close buttons===
Users of websites and web applications continuously experience unwanted pop-up ads throughout the course of their normal interaction with a web browser.<ref>{{cite web|last=Wegert|first=Tessa|title=Pop-Up Ads, Part 1: Good? Bad? Ugly?|date=14 March 2002 |url=http://www.clickz.com/clickz/column/1707013/pop-up-ads-part-good-bad-ugly|publisher=Incisive Interactive Marketing LLC|access-date=March 14, 2002}}</ref>  Ordinarily, users respond by dismissing the pop-up through the "close" or "cancel" feature of the window hosting the pop-up. Because this is a typical response, some authors of pop-up advertising depend on this and create on-screen buttons or controls that look similar to a "close" or "cancel" option. When the user chooses one of these "simulated cancel" options, the button performs an unexpected or unauthorized action (such as opening a ''new'' pop-up or downloading an unwanted file on the user's system).<ref name="Smart Computing Article - Pop-ups">{{cite web|url = http://www.smartcomputing.com/Editorial/article.asp?article=articles/WebOnly/TechSupport/441w10/41w01.asp&guid=|title = Pop-ups|work = Smart Computing|date = September 2004|archive-url = https://web.archive.org/web/20100522050023/http://www.smartcomputing.com/Editorial/article.asp?article=articles%2FWebOnly%2FTechSupport%2F441w10%2F41w01.asp&guid=|archive-date = 2010-05-22|url-status = dead}}</ref>

===Circumventing pop-up blockers===

A ''hover ad'' or ''in-page pop-up'' uses [[JavaScript]] to combine a [[banner ad]], and a pop-up window that appears in front of the browser screen. JavaScript imposes an advertisement over a webpage in a transparent layer. This advertisement can appear in a variety of forms. For example, an advertisement can contain an animation that links to the advertiser's site. An advertisement can also look like a normal [[window (computing)|window]]. Pop-up blockers cannot block the ad because it is a part of the webpage, but it can be blocked with third-party ad blockers such as [[AdBlock]] and [[Adblock Plus]], or by using custom [[Cascading Style Sheets|style sheets]].

===URL redirection===
URLs are sometimes redirected to advertisement pages by [[HTTP 302|URL redirection]].

URLs are sometimes opened in a new tab and then the content of the old background tab will be replaced with an advertisement page by [[HTTP 302|URL redirection]], other times it switches the tab the user is on to the advertisement tab. [[Adblock Plus]]<ref>{{cite web|url=https://issues.adblockplus.org/ticket/2095#comment:16|title=#2095 (Prevent background redirects)|work=Adblock Plus Issue Tracker}}</ref> and [[NoScript]]{{fact|date=March 2018}} cannot block these redirects.