function horizontal() {
	 var navItems = document.getElementById("menu_lateral").getElementsByTagName("li");
	 for (var i=0; i< navItems.length; i++) {
		if(navItems[i].className == "sobeTudo")
		{
		   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";}
		   }
		}
	 }
  }