Hello, I would like to know how would I create a sub menu. I have website www.packagesforvacation.com

I would like to add few countries under package destination on mousehover.

I have installed this theme http://marinelli.netsons.org/

When you mouseover on cameras you will find 1 sub menu opens. How can I open this type of sub menu when someone mouseover on "package destination"

Please reply as soon as possible, I cannot move forward without solving this issue.

Thanks