I think I might have a solution without touching the code. Normally it would require adding some HTML elements, but I’ve tried the following CSS on the demo and it worked for me.
[code]
.asp_option_cat {
width: 200px;
display: inline-block;
}
.categoryfilter {
width: 420px;
}
[/code]
That will make each option 200px wide displayed as inline-block and the container 420 pixels. That means it’s printed to 2 columns like so: http://i.imgur.com/UP0PMHA.png
