function showLAYER(idName){ 
  if ( document.getElementById )
    document.getElementById( idName ).style.visibility   = 'visible'
  else if ( document.all ) document.all( idName ).style.visibility = 'visible' 
  else if ( document.layers ) document.layers[ idName ].visibility = 'show' 

}

function hideLAYER(idName){ 
  if ( document.getElementById )
    document.getElementById( idName ).style.visibility   = 'hidden' 
  else if ( document.all ) document.all( idName ).style.visibility = 'hidden' 
  else if ( document.layers ) document.layers[ idName ].visibility = 'hide' 

}

function hideALL(){
  hideLAYER('help1')
  hideLAYER('help2')
  hideLAYER('help3')
  hideLAYER('help4')
  hideLAYER('help5')
  hideLAYER('help6')
}