Nivo slider?

on my menu in,
http://fixmysite.us/matos/sunnybeachvacations/
I cant figure out why the menu appears to pop-up under the nivo slider,
im guessing Id have to change the position to relative for each <li> in the menu, then give each li ul a position of absolute so I can change its z-index to something like 105 or so.
Is this right?

What browser is this happening in? It works fine for me in Chrome. In older browsers (like IE7) you would have to do something like:


#bloqueMenuPrincipal {
  position: relative; 
  z-index: 100;
}

I put IE into IE7 mode using the developer tools and saw the issue you mentioned. Maybe this will help: