How to add a TEXT UNDERLINE rollover effect to text links in the menu and on some buttons on the page

Hello Velo wizards.
I am working on the navigation menu and would like to add a TEXT UNDERLINE rollover effect on the menu, and on some buttons on the site. There is no option for UNDERLINING TEXT on hover in the WYSAWIG mode. what are my alternatives other than hiring a coder to do that? it seems like something I could do on my own…

check out the navigation menu on this site, I would like to achieve the same effect on the top menu. text gets underlined, when the mouse rolls over the top menu links: “bellydancernewyork dot com”. How can I make a menu like this in wix? let me know if it is possible. thanks a lot