Patent ID: 8296392

Claim:
A method performed by a user computing device upon loading a web page of a web site, said method comprising: loading an update handler over a network in response to an update handler tag included in the web page, said update handler loaded as a part of the web page; and under control of the update handler: detecting, via an analysis of content of the web page, that the web page includes a link to a product page of an electronic catalog of products, said detecting comprising determining that the link matches a pre-specified link signature that specifies a link format of product pages of said electronic catalog; retrieving, over a network from a content server that is distinct from the web site, supplemental content associated with said link, said supplemental content comprising catalog content associated with a product corresponding to said link; and in response to a mouse-over event associated with the link, supplementing the web page with a display object that displays the supplemental content in association with the link, said display object providing functionality for a user of the user computing device to complete a purchase of a product from the electronic catalog; said method performed by the user computing device under the control of executable instructions.