Idea to use this type of rollover effect with Visual Index Line on Edmontonians Map http://www.art-tube.com/panels.html
(ImageReady slices)

Innovative map/art project http://www.peeruk.org/projects/arrhen1.html or www.tfl.gov.uk/tube ..." large scale version of the familiar London A-Z map. This intricate graphic wall piece comprises 18 characters in scenarios that evolve through more than 250 illustrations. The narratives traverse and intersect across the map horizontally, vertically and diagonally in a web-like formation reminiscent of the underground network." As with any map, the reading of Arrhenius¹s A-Z differs markedly if it is presented as one continuous flat sheet or as a collection of bound pages. Essay at http://www.peeruk.org/projects/arrhen2.html

According to a survey released by FIND/SVP, 84% of business executives feel that Web searches -- using the generally consumer-centric search engines now available --take longer than they should due to poor results. It is estimated that the loss of productive time using search engines to conduct online research cost businesses $31 billion last year. http://www.emarketer.com/Article.aspx?1002877

Traditional "timeline" ; http://www.cafeshops.com/cp/browse/?Ntt=Timeline&Nao=1&Ntk=All&pp=3&pv=kcomposite.9914769&No=1&N=0&zoom=yes#zoom

Victoria and Albert Museum (online); http://www.vam.ac.uk/sitemap/