Abstract: A method for allowing enhanced interaction between an IFrame or a web page of a website that corresponds to a domain and an embedded IFrame from a different domain. Accordingly, two IFrames from the same domain that are placed on the same page are allowed to run a JavaScript code one on the other. The website is allowed to place a site tag, from a domain different than the web page's domain that provided to the website by a trusted third party on the top page that is not being nested within an IFrame. The site tag that is delivered on the top page is allowed to perform actions on behalf of an ad tag from the same domain that is nested within the IFrames.

Abstract: A real-time system for verifying advertisements against their campaign rules prior to serving them by an ad server that includes: (a) a decision server for deciding whether or not an advertisement intended to be presented to a user matches its campaign rules; (b) a database, which receives a connection from the decision server, the database comprises campaign rules according to publisher's intents; (c) a Web server comprising query SW modules, the server delivers the query SW modules to the user's browser; and (d) a query SW module executed by the user's browser and adapted to extract parameters that are necessary for the decision server; wherein the parameters are delivered to the decision server which analyzes the campaign rules and the parameters provided, and sends its decision to the ad sever which serves or block the advertisement accordingly.