//*****************************************************************
// Hide block of HTML code within div tag
//*****************************************************************
function hidediv(id) {

  //safe function to hide an element with a specified id
  if (document.getElementById) { // DOM3 = IE5, NS6
    document.getElementById(id).style.display = 'none';
    
  } else {
    
    if (document.layers) { // Netscape 4
      document.id.display = 'none';
    } else { // IE 4
      document.all.id.style.display = 'none';
    }
  }
};

//*****************************************************************
// show block of HTML code within div tag
//*****************************************************************
function showdiv(id) {

  //safe function to show an element with a specified id
  if (document.getElementById) { // DOM3 = IE5, NS6
    document.getElementById(id).style.display = 'block';
  
  } else {
  
    if (document.layers) { // Netscape 4
      document.id.display = 'block';
    } else { // IE 4
      document.all.id.style.display = 'block';
    }
  }
};