I'd say your DOM traversals might add quite a bit of weight to your
filter.  Why select the LI element if you're really looking at its
child A element's innerHTML property ?
Select those nodes and skip the execution of down, should speed things
up quite a bit.

Also if you're using a text input control then why not use keydown or
keyup events to trigger the filter instead of a timer?  Timers
(Intervals) add weight to the app, also it could execute as the user
is typing which could slow down data entry before the user has
finished what they were hoping to filter by.  If you do go for a key
event put a timeout on it such that it won't execute until the user
has *finished* typing, if you filter on each keystroke and the user
types fast it could really gum things up.

On Dec 1, 1:52 pm, Walter Lee Davis <[EMAIL PROTECTED]> wrote:
> Wow, thanks! Had no idea.
> Walter
> On Dec 1, 2008, at 1:46 PM, Diodeus wrote:
> > "Performant" isn't a word.
> >http://weblogs.asp.net/jgalloway/archive/2007/05/10/performant-isn-t-...
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