
function menus(menu, submenu){

  var tab1 = '<table border=0 cellspacing=0 cellborder=0 cellpadding=0 valign=top>'
  var tab2 = '<tr valign=top><td>'
  var tab4 = '<tr><td>'
  var tab5 = '</td></tr></table></td><td align=center><h2>Thirty Meter Telescope Site Testing -- Public Database Server<br></h2><hr>'
  var tab6 = '<table width=100% border=0 cellspacing=5 cellborder=0 cellpadding=8><tr valign=top><td>'
  var tab7 = '<table width=160 border=0 cellspacing=0 cellborder=0 cellpadding=2>'
  
  document.write('<base href="http://sitedata.tmt.org/">');
  document.write('<html>');
  document.write('<meta name="MSSmartTagsPreventParsing" content="TRUE">');
  document.write('<link rel="stylesheet" type="text/css" href="style.css">');
  document.write('<title>Thirty Meter Telescope Site Testing -- Public Database Server</title>');
  document.write('<body bgcolor=#eeeeee background=Images/back.jpg>');

  document.write(tab1);
  document.write(tab2);
  document.write(tab7);
  document.write(tab4);

  document.write('<a href="http://www.tmt.org"><img border="0" src="/Images/TMTlogo.gif"></a><br><br>')

   if (menu == 1){
    document.write('<a href="/index.html"><font class=set_menu_on>Home</font></a><br><hr>');
  }
  else {
    document.write('<a href="/index.html"><font class=set_menu_off>Home</font></a><br><hr>');
  }


   if (menu == 11){
    document.write('<a href="/changelog.html"><font class=set_menu_on>Change Log</font></a><br><hr>');
  }
  else {
    document.write('<a href="/changelog.html"><font class=set_menu_off>Change Log</font></a><br><hr>');
  }


  if (menu == 2){
    document.write('<a href="/Available_data/index.html"><font class=set_menu_on>Overview</font></a><br><ul>');
    if (submenu == 9){
      document.write('<li><a href="/Available_data/sites.html"><font class=set_menu_on>Sites</font></a>');
    }
    else {
      document.write('<li><a href="/Available_data/sites.html"><font class=set_menu_off>Sites</font></a>');
    }
    if (submenu == 1){
      document.write('<li><a href="/Available_data/instruments.html"><font class=set_menu_on>Instruments</font></a>');
    }
    else {
      document.write('<li><a href="/Available_data/instruments.html"><font class=set_menu_off>Instruments</font></a>');
    }
    if (submenu == 2){ 
      document.write('<li><a href="/Available_data/data_fields.html"><font class=set_menu_on>Data Fields</font></a>');
    }
    else {
      document.write('<li><a href="/Available_data/data_fields.html"><font class=set_menu_off>Data Fields</font></a>');
    }
    if (submenu == 3){
      document.write('<li><a href="/Available_data/known_issues.html"><font class=set_menu_on>Known Issues</font></a>');
    }
    else {
      document.write('<li><a href="/Available_data/known_issues.html"><font class=set_menu_off>Known Issues</font></a>');
    }
    if (submenu == 4){ 
      document.write('<li><a href="/Available_data/data_availability.html"><font class=set_menu_on>Data Availability</font></a>');
    }
    else {
      document.write('<li><a href="/Available_data/data_availability.html"><font class=set_menu_off>Data Availability</font></a>');
    }
    document.write('</ul><hr>');
  }
  else {
    document.write('<a href="/Available_data/index.html"><font class=set_menu_off>Overview</font></a><br><hr>');
  }


   if (menu == 10){
    document.write('<a href="/register.html"><font class=set_menu_on>Create account</font></a><br><hr>');
  }
  else {
    document.write('<a href="/register.html"><font class=set_menu_off>Create account</font></a><br><hr>');
  }


   if (menu == 3){
    document.write('<a href="/Data/index.html"><font class=set_menu_on>Download Data</font></a><br>&nbsp;&nbsp;(<a href="/register.html">log-in</a> required)<br>');
    if (submenu == 1){
      document.write('<ul>');
      document.write('<li><a href="/Data/weather.php"><font class=set_menu_off>Weather Station</font></a></li>');
      document.write('<li><a href="/Data/dimm.php"><font class=set_menu_off>DIMM</font></a></li>');
      document.write('<li><a href="/Data/mass_redo.php"><font class=set_menu_off>MASS</font></a></li>');
      document.write('<li><a href="/Data/dust.php"><font class=set_menu_off>Dust Sensor</font></a></li>');
      document.write('<li><a href="/Data/sonic.php"><font class=set_menu_off>Sonic Anemometer</font></a></li>');
      document.write('<li><a href="/Data/tower.php"><font class=set_menu_off>30-m Tower</font></a></li>');
      document.write('</ul>');
    }
    document.write('<hr>');
  }
  else {
    document.write('<a href="/Data/index.html"><font class=set_menu_off>Download Data</font></a><br>&nbsp;&nbsp;(<a href="/register.html">log-in</a> required)<br><hr>');
  }

   if (menu == 9){
    document.write('<a href="/Data/plot.php"><font class=set_menu_on>Plot Data</font></a><br>&nbsp;&nbsp;(<a href="/register.html">log-in</a> required)<br><hr>');
  }
  else {
    document.write('<a href="/Data/plot.php"><font class=set_menu_off>Plot Data</font></a><br>&nbsp;&nbsp;(<a href="/register.html">log-in</a> required)<br><hr>');
  }


   if (menu == 8){
    document.write('<a href="/usage.html"><font class=set_menu_on>Usage Conditions</font></a><br><hr>');
  }
  else {
    document.write('<a href="/usage.html"><font class=set_menu_off>Usage Conditions</font></a><br><hr>');
  }


   if (menu == 4){
    document.write('<a href="/references.html"><font class=set_menu_on>References</font></a><br><hr>');
  }
  else {
    document.write('<a href="/references.html"><font class=set_menu_off>References</font></a><br><hr>');
  }

   if (menu == 5){
    document.write('<a href="/acknowledgments.html"><font class=set_menu_on>Acknowledgments</font></a><br><hr>');
  }
  else {
    document.write('<a href="/acknowledgments.html"><font class=set_menu_off>Acknowledgments</font></a><br><hr>');
  }


   if (menu == 6){
    document.write('<a href="/disclaimers.html"><font class=set_menu_on>Disclaimers</font></a><br><hr>');
  }
  else {
    document.write('<a href="/disclaimers.html"><font class=set_menu_off>Disclaimers</font></a><br><hr>');
  }


   if (menu == 7){
    document.write('<a href="/contact.html"><font class=set_menu_on>Contact Us</font></a><br><hr>');
  }
  else {
    document.write('<a href="/contact.html"><font class=set_menu_off>Contact Us</font></a><br><hr>');
  }


  document.write(tab5);
  document.write(tab6);
}

function emailadd(name, domain, realname){
  output  = '<a href=mailto:' + name + '@' + domain + '>';
  output += realname + '</a>';
  document.write(output);
}

function footer(){
  var dt = new Date (document.lastModified);
        
  document.write('<p></td></tr></table></td></tr></table>');
  document.write('<table width=100% border=0 cellpadding=0 valign=top><tr><td><hr></td></tr></tr></table>');
  document.write('For questions or comments concerning the data or this website, please <a href="/contact.html">contact us</a>.');
//  emailadd('mschoeck', 'tmt.org', 'TMT site testing group');
//  document.write('.<br>');
//  document.write('For problems with this website, contact the ');
//  emailadd('mschoeck', 'tmt.org', 'webmaster');
//  document.write('.<br>');
//  document.write("Last updated: "+dt.toUTCString());
  document.write('</body></html>');
}

function check_name(form){
  if (form.name.value == ""){
    alert("Please fill in your name.");
    form.name.focus();
    return(false);
  }
  
  return(true);
}

function check_date(form){
  if (form.date.value == ""){
    alert("Please fill in the date.");
    form.date.focus();
    return(false);
  }
  
  return(true);
}

function check_site(form){
  if (form.site.selectedIndex == 0){
    alert("Please select one of the sites from the menu.");
    form.site.focus();
    return (false);
  }

  return(true);
}


