function startmenu()
  {
  	document.getElementById("sub1").style.display = "block";
  }
  
  function menufunc()
  {
  	if(document.getElementById("sub1").style.display == "none")
  	{
  		startmenu();
  		document.getElementById("sub1").style.display = "block";
  	}
  	else
  	{
  		startmenu();
  	}
  }