// Показ или скрытие элементов

function ShowHide(ID)
  {
   var elem = document.getElementById(ID);
   if (elem.style.display == "none")
     cShow = 0;
   if (elem.style.display == "block")
     cShow = 1;
   if (cShow == 0)
     elem.style.display = "block";
   if (cShow == 1)
     elem.style.display = "none";
  }