How do I adjust the window panels in Bridge horizontally? It is easy to adjust the width of them vertically, but I cannot recall how to adjust them horizontally. I had to Reset Preferences and cannot seem to figure out how to "stack" the window panels. In other words, I might like to have two window panels, tabbed, in the upper left corner, and two more window panels, tabbed, in the lower left corner (underneath the others). If this is not clear I could send an email with a screen capture of my original layout before I had to Reset Preferences. Thanks!