8. The one or more computer-readable storage media as recited in claim 7 , wherein the operations further comprise, prior to the receiving the call, receiving HTML content that contains a script that activates or instantiates the third party object.
8. The one or more computer-readable storage media as recited in claim 7 , wherein the operations further comprise, prior to the receiving the call, receiving HTML content that contains a script that activates or instantiates the third party object. 9. The one or more computer-readable storage media as recited in claim 8 , wherein the ascertaining the domain context of the third party object comprises ascertaining a source identifier of the HTML content.