function openContact() {
  if (document.getElementById) { // DOM3 = IE5, NS6 
    document.getElementById('contact').style.visibility = 'visible'; 
  } 
  else { 
    if (document.layers) { // Netscape 4 
    document.contact.visibility = 'visible'; 
    } 
    else { // IE 4 
    document.all.contact.style.visibility = 'visible'; 
    } 
  } 
}
 
function closeContact() {
  if (document.getElementById) { // DOM3 = IE5, NS6 
    document.getElementById('contact').style.visibility = 'hidden'; 
  } 
  else { 
    if (document.layers) { // Netscape 4 
    document.contact.visibility = 'hidden'; 
    } 
    else { // IE 4 
    document.all.contact.style.visibility = 'hidden'; 
    } 
  } 
}

function openHelp() {
  if (document.getElementById) { // DOM3 = IE5, NS6 
    document.getElementById('help').style.visibility = 'visible'; 
  } 
  else { 
    if (document.layers) { // Netscape 4 
    document.help.visibility = 'visible'; 
    } 
    else { // IE 4 
    document.all.help.style.visibility = 'visible'; 
    } 
  } 
}
 
function closeHelp() {
  if (document.getElementById) { // DOM3 = IE5, NS6 
    document.getElementById('help').style.visibility = 'hidden'; 
  } 
  else { 
    if (document.layers) { // Netscape 4 
    document.help.visibility = 'hidden'; 
    } 
    else { // IE 4 
    document.all.help.style.visibility = 'hidden'; 
    } 
  } 
}  


function DisplayContact() 
{
	var is;
	is = new Is();
	if (is.mac || is.nav4) {  // mac & netscape 4
		openWindowContact();
//		openContact();  // for testing
	}
	else {
//		openContact();
		openWindowContact();  // for testing
	}
}

function DisplayHelp() 
{
	var is;
	is = new Is();
	if (is.mac || is.nav4) {  // mac & netscape 4
		openWindowHelp();
//		openHelp();  // for testing
	}
	else {
		openHelp();
//		openWindowHelp();  // for testing
	}
}