Regarding the "tapping twice" bit: Mobile Safari on iOS has special
logic built-in to emulate onmouseover / hover events for situations
where that action triggers a change in the page (DOM change or something
that gets changed in terms of display:none / visibility:hidden etc).
See the breakdown of the "One Finger Events" on
http://developer.apple.com/library/safari/#documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html#//apple_ref/doc/uid/TP40006511-SW1
Worth noting though that other mobile browsers don't currently have that
particular heuristic (though I know of at least one that's planning to
add something similar).
P
--
Patrick H. Lauke
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re·dux (adj.): brought back; returned. used postpositively
[latin : re-, re- + dux, leader; see duke.]
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