function menuPrincipal(){var navItems=document.getElementById("menuSup").getElementsByTagName("li");for(var i=0;i<navItems.length;i++){if(navItems[i].className=="submenu")
{if(navItems[i].getElementsByTagName('ul')[0]!=null)
{navItems[i].onmouseover=function(){this.getElementsByTagName('ul')[0].style.display="block";this.getElementsByTagName('a')[0].style.background="url('imagens/bgMenuhover.png')"}
navItems[i].onmouseout=function(){this.getElementsByTagName('ul')[0].style.display="none";this.getElementsByTagName('a')[0].style.background="none"}}}}}