function menuChange(target, Img) 
{
   if (document.getElementById(target).style.display == "none") 
   {
      document.getElementById(target).style.display = "";
      document.getElementById(Img).src = "../images/minus.gif";
   }
   else 
   {
      document.getElementById(target).style.display = "none";
      document.getElementById(Img).src = "../images/plus.gif";
   }
}

function menuRis(target) 
{
   if (document.getElementById(target).style.display == "none") 
   {
      document.getElementById(target).style.display = "";
   }
   else 
   {
      document.getElementById(target).style.display = "none";
   }
}