Hi, I do not quite like that because of the impact to defined transmissions. For example, adding: stacker transmit from: #classes; to: #methods. would lead to an error when the #classes pane would not be around. So, this would imply in having the creation of a dynamic transmission as well, but this will make it even harder to debug when a typo occurs in the pane names. It is cleaner to use a dynamic presentation to decide about the different browsers. Or am I missing something? Cheers, Doru On 25 Jul 2011, at 09:12, Damien Cassou wrote: -- www.tudorgirba.com "Problem solving should be focused on describing the problem in a way that makes the solution obvious."