function vertical() {

   var navItems = document.getElementById("nav").getElementsByTagName("li");
    
    for (var i=0; i< navItems.length; i++) {
        if(navItems[i].className == "submenu"){
          navItems[i].onmouseover=function() {this.getElementsByTagName('ul')[0].style.display="block";this.style.backgroundColor = "#A8281E";}
          navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";this.style.backgroundColor = "";}
        }
    }

}

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";this.style.backgroundColor = "#A8281E";}
              navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";this.style.backgroundColor = "";}
            }
        }
    }

}