function show(Th, Ident)
{
  if (Ident) {
    document.getElementById(Ident).style.display = 'block'
  }
  Th.style.borderColor = '#900 #fff #fff #900'
  Th.style.backgroundColor = '#ccc'
}
function hide(Th, Ident)
{
  if (Ident) {
    document.getElementById(Ident).style.display = 'none'
  }
  Th.style.borderColor = '#e4e4e4'
  Th.style.backgroundColor = '#e4e4e4'
}