Element.measure will help you there. http://mootools.net/docs/more/Element/Element.Measure
~Philip On Wed, Oct 3, 2012 at 5:38 AM, Hamburger <bilidi...@web.de> wrote: > Hello and thx for your hint. > I have it. > I think getSize().y would'nt work because the element is hidden ... > cheers hamburger >