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This is a total revamp of original jquery.appear plugin hosted on http://code.google.com/p/jquery-appear/
Check <a href="http://morr.github.com/appear.html">demo page</a>!
This plugin can be used to prevent unnecessary processeing for content that is hidden or is outside of the browser viewport.
It implements a custom appear/disappear events which are fired when an element became visible/invisible in the browser viewport.
If you want to fire appear event for elements which are close to viewport but are not visible yet, you may add data attributes appear-top-offset and appear-left-offset to DOM nodes.
Appear check can be forced by calling $.force_appear(). This is suitable in cases when page is in initial state (not scrolled and not resized) and when you want manually trigger appearance check.
Also this plugin provides custom jQuery filter for manual checking element appearance.
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