(Navbar) How to make drop down menu showing pop up hover without click it first?

[basketmen]

vbulletin drop down menu is not useful, not everybody know drop down is a menu list unless they click it first, just old member or people that familiar with vbulletin site that often using vbulletin drop down menu


the example is like this http://www.floporfold.com/
it can showing pop up hover without click it first


did someone have already code for this?? or there is a setting for it? why above site can do that