XML-Driven Drop-Down Menu

Hello I am using your XML-Driven Drop-Down Menu - with 100% great success…
how can I code this to show 2-3 columns - if there are more than 10 menu items?

so 3 cols would be 30 total menu items etc etc - how can this be done using the XML-Driven Drop-Down Menu?

NOTE: NO SUBMENUS - just 3 or more columns of XML menu choices