I'm on vacation for 2 weeks to try and wrap up the writing of my book. This will include a rewrite of the algorithm used to do the box layout in the Trixul toolkit; in running side-by-side comparisons with Mozilla's Gecko engine, I noticed some problems in how unused space was distributed among spacers within a box. So, I wrote a simulator and came up with an algorithm that I am now fine tuning. Hopefully soon I will submit the changes to sourceforge.