The trick is to show the element (display:block) but also hide it (visibility:hidden) and to set it’s position to absolute so that it doesn’t affect the page flow.
The MooTools Element.Measure class does this, as Oscar mentioned.
The trick is to show the element (display:block) but also hide it (visibility:hidden) and to set it’s position to absolute so that it doesn’t affect the page flow.
The MooTools Element.Measure class does this, as Oscar mentioned.