List properties by continent?

Hello,
I have just bought ospholiday template and am busy customizing it for my needs. I would like on the main menu to have continents listed, i.e Asia,Africa,North America,South America etc in a drop down menu and when the user clicks on say Asia all properties from asia are listed. I noticed in the countries database there is no continent listed but thats no problem as i figured out how to merge continents codes with that table so now im stuck on how to achieve the menu part???
thanks

Hi Kyle,
In fact, you can use the layout menu : Property listing layout of OS Property. But the main problem is OS Property doesn't allow user to show properties of more than one countries. So you can only select properties one country in Asia or other continents.
I suggest you to use the third level menu for specific countries of continents. The second level is the continents.
Thanks
Dam