Is there a way to have the child categories collapse up and down from the parent category? For example, if you look at my attached picture (in the side bar on the right) or at the live site, you will see "Europe", then if you click on Europe, the list expands an d the countries appear underneath, then the cities. This will make a shorter and more tidy looking list.  If not, is there a way to display only the top level categories? Or two levels? I have seen I can choose a drop down, but it is not my preferred option. Thank you!