function onmenue()
{  
    for(var i=0; i < 8; i++) {
     document.getElementsByTagName("h2")[i].style.display = "block";  
    }
    document.getElementsByTagName("div")[3].style.display = "block"; 
}
function offmenue()
{    
   for(var i=0; i < 8; i++) {
    document.getElementsByTagName("h2")[i].style.display = "none";
   }
}