Question

The facebook appcenter menu has fixed top and relative left. It looks like it’s updating from javascript. Does anyone know how to do that? Or if there is a plugin out there like this? I can’t for the life of me find it.

http://www.facebook.com/appcenter/?from_bookmark=1

Answer 1

Position: fixed

http://www.w3schools.com/cssref/playit.asp?filename=playcss_position&preval=fixed

This fiddle demonstrates a fixed element with a dynamic “left” value using jQuery http://jsfiddle.net/Tws2W/.

Code of interest:

$(window).resize(function() 
{
  $('#fixed').css('left', Math.max(($(window).width() - 400), 0) + 'px');
});​