// JavaScript Document
function horizontal() {

   var navItems = document.getElementById("barra").getElementsByTagName("li");
    
   for (var i=0; i< navItems.length; i++) {
      if((navItems[i].className == "menuvertical") || (navItems[i].className == "submenu"))
      {
         if(navItems[i].getElementsByTagName('ul')[0] != null)
         {
            navItems[i].onmouseover=function() {this.getElementsByTagName('ul')[0].style.display="block";}
            navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";}
         }
      }
   }

}