
<!-- TOP MENU -->

function horizontal() {
 
   var navItems = document.getElementById("menutop").getElementsByTagName("li");
    
   for (var i=0; i< navItems.length; i++) {
      if(navItems[i].className == "menutopparent")
      {
         if(navItems[i].getElementsByTagName('ul')[0] != null)
         {
            navItems[i].onmouseover=function() {this.getElementsByTagName('ul')[0].style.display="block";this.style.backgroundColor = "none";}
            navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";this.style.backgroundColor = "none";}
         }
      }
   }
 
}



<!-- LEFT MENU -->

function IEHoverPseudo() {

	var navItems = document.getElementById("menulateral").getElementsByTagName("li");
	
	for (var i=0; i<navItems.length; i++) {
		if(navItems[i].className == "menuparent") {
			navItems[i].onmouseover=function() { this.className += " over"; }
			navItems[i].onmouseout=function() { this.className = "menuparent"; }
		}
	}

}


window.onload = function() {
horizontal();
IEHoverPseudo();
}