var hta;
var hti;
var txt;
var geoc;

var map;
var gm;

var first = true;
var aicon=new GIcon();
aicon.image="/img/i.png";
aicon.shadow="";
aicon.iconSize=new GSize(15, 13);
aicon.shadowSize=new GSize(15, 13);
aicon.iconAnchor=new GPoint(6, 6);
aicon.infoWindowAnchor=new GPoint(7, 6);
var dptIcon = new GIcon();
aicon.image="/img/i.png";
dptIcon.shadow="";
dptIcon.iconSize=new GSize(23, 23);
dptIcon.shadowSize=new GSize(23, 23);
dptIcon.iconAnchor=new GPoint(12, 12);
dptIcon.infoWindowAnchor=new GPoint(12, 12);
dptIcon.image = '/img/dpt.png';
var dstIcon = new GIcon(dptIcon);
dstIcon.image = '/img/dst.png';

var taf = new GIcon();
taf.image = "http://www.airspace-v.com/img/taf.png";
taf.iconSize = new GSize(9, 17);
taf.iconAnchor = new GPoint(4, 12);
taf.infoWindowAnchor = new GPoint(4, 12);

var mApts = [];
var mMets = [];
var dpt = false;
var dst = false;
var gcl = false;
var dst2 = false;
var dpt2 = false;

function ce(t){return document.createElement(t);}
function ct(s){return document.createTextNode(s);}
function ge(i){return document.getElementById(i);}
function ac(p,c){return p.appendChild(c);}
////////////////////////////////////////////////////////////////////////
var wta;
var wtas = false;
function WTAloft(map) {
  var optstl=false;
  var valtl=false;
  var els = [];
  //var opt;
  var a;
  var c;

  function opts() {
    var fl = ge('fl').selectedIndex;
    var time = ge('time').selectedIndex;
    var pc = ge('pc').selectedIndex;
    a = (fl < 7) ? (2306 - fl + 10 * time + 1000 * pc) : 0;
    c = 2908 - fl + 10 * time + 1000 * pc;
    wt();
  }

  function validity(lat,lng) {
    // TBD: beautify code duplication from opts
    var fl = ge('fl').selectedIndex;
    var time = ge('time').selectedIndex;
    var pc = ge('pc').selectedIndex;
    a = (fl < 7) ? (2306 - fl + 10 * time + 1000 * pc) : 0;
    c = 2908 - fl + 10 * time + 1000 * pc;
    if (optstl) {map.removeOverlay(optstl); optstl = false;}
    // 2306: x 1047 y 24, 449x199
    // 2908: x 1060 y 24, 449x199
    content = '<div style="width:557px;height:432px;background-color:#dfdfff;border:1px solid black;">' +
	      '<div style="position:absolute;top:8px;left:8px;">Americas:</div><div style="position:absolute;left:100px;top:8px;clip:rect(0px,449px,199px,0px);width:449px;height:199px;"><img src="http://aviationweather.gov/data/iffdp/' + a + '.gif" style="position:absolute;left:-1047px;top:-24px"></div>' +
	      '<div style="position:absolute;top:224px;left:8px;">Europe /<br />Africa:</div><div style="position:absolute;left:100px;top:224px; clip:rect(0px,449px,199px,0px);width:449px;height:199px;"><img src="http://aviationweather.gov/data/iffdp/' + c + '.gif" style="position:absolute;left:-1060px;top:-24px"></div>' +
	      '<div style="position:absolute;top:392px;left:8px;"><form id=valc action="#"><input type=submit value=Close /></form></div>' +
	      '</div>';
content =
  '<div style="position:absolute;width:332px;height:208px;background-color:#dfdfff;border:1px solid black;">' +
  '<div style="position:absolute;top:8px;left:8px;">Americas:</div><div style="position:absolute;left:100px;top:8px;clip:rect(0px,224px,72px,0px);width:225px;height:100px;"><img src="http://aviationweather.gov/data/iffdp/' + a + '.gif" style="position:absolute;left:-524px;top:-16px;width:864px;height:984px;"></div>' +
  '<div style="position:absolute;top:96px;left:8px;">Europe /<br />Africa:</div><div style="position:absolute;left:100px;top:96px; clip:rect(0px,224px,72px,0px);width:225px;height:100px;"><img src="http://aviationweather.gov/data/iffdp/' + c + '.gif" style="position:absolute;left:-530px;top:-16px;width:864px;height:984px;"></div>' +
  '<div style="position:absolute;top:152px;left:8px;"><form id=valc action="#"><input type=submit value=Close /></form></div>' +
  '<div style="position:absolute;top:174px;left:8px">Wind speed in knots.<br />Temps unsigned unless positive</div>' +
  '</div>';
    valtl = new ELabel(new GLatLng(lat,lng), content, 'elabel', new GSize(-166,88));
    this.map.addOverlay(valtl);
    var m = this.map;
    ge('valc').onsubmit=function(){m.removeOverlay(valtl);valtl=false;return false;};
  }

  function click(lat, lng) {
    // TBD: handle attribute 'checked'
    if (optstl) {map.removeOverlay(optstl); optstl = false;}
    if (valtl) {map.removeOverlay(valtl); valtl = false;}
    content = '<div style="width:200px;height:70px;background-color:#dfdfff;border:1px solid black;padding:10px;"><form id=optf action="#">' +
	      '<select id=fl><option>FL 050</option><option>FL 100</option><option>FL 180</option><option>FL 240</option><option>FL 300</option><option>FL 340</option><option>FL 390</option><option>FL 450</option><option>FL 600</option></select> ' +
	      '<select id=time><option>+06h</option><option>+12h</option><option>+18h</option><option>+24h</option><option>+30h</option><option>+36h</option></select> ' +
	      '<select id=pc><option>Curr</option><option>Prev</option></select><br />&nbsp;<br />' +
	      '<input id=wtav type=button value=Validity title="show validity of data" /> &nbsp; <input type=submit value=Show title="Show selected winds and temperatures" /> &nbsp; <input id=wtan type=button value=Hide title="Hide winds and temperatures aloft" />' +
	      '</form></div>';
    optstl = new ELabel(new GLatLng(lat, lng), content, 'elabel', new GSize(-100,50));
    this.map.addOverlay(optstl);
    ge('optf').onsubmit = opts;
    ge('wtav').onclick  = function(){validity(lat,lng);};
    ge('wtan').onclick  = function(){wtas = false;for (i in els) map.removeOverlay(els[i]);if (optstl) {map.removeOverlay(optstl); optstl = false;}};
    wtas = true;
return false;
  }

  function wt() {
    if (!wtas) return;
    if (optstl) {map.removeOverlay(optstl); optstl = false;}
    for (i in els) map.removeOverlay(els[i]);
    els = [];
    var A = [1866, 1777, 1696, 1621, 1550, 1483, 1418, 1355, 1294, 1234, 1174, 1114, 1054, 993, 930, 865, 798, 717, 651, 570, 482, 384, 272, 142];
    var C = [1893, 1810, 1732, 1656, 1583, 1512, 1441, 1371, 1302, 1231, 1160, 1087, 1011, 933, 850, 762, 667, 564, 449, 319, 168];
  /*   var E = [189, 274, 353, 427, 497, 565, 630, 694, 757, 820, 882, 945, 1009, 1075, 1142, 1208, 1287, 1365, 1450]; */
    if (map.getZoom() < 5) {
      // zoom in - TBD: reduce sizes of wind graphics
      return;
    }
    var b = map.getBounds();
    var sw = b.getSouthWest();
    var ne = b.getNorthEast();
    for (var lat = Math.floor(sw.lat() / 5) * 5 - 5; lat <= ne.lat() + 5; lat += 5) {
      for (var lng = Math.floor(sw.lng() / 5) * 5 - 5; lng <= ne.lng() + 5; lng += 5) {
	var fbase;
	var size;
	var step;
	var xoffs;
	if ((lat >= -35) && (lat <= 65) && (lng >=-20) && (lng <= 60)) {
	  // C
	  if ((lat > 60) && (lng > 30)) continue;
	  fname = c ? (c + '.gif') : 'blank.png';
	  size = 69;
	  step = 70;
	  xoffs = -544;
	  y = C[(lat + 35) / 5] - 34;
	} else if ((lat >= -50) && (lat <= 65) && (lng >=-120) && (lng <= -25)) {
	  // A
	  if ((lat > 60) && (lng > -60)) continue;
	  fname = a ? (a + '.gif') : 'blank.png';
	  size = 63;
	  step = 60;
	  xoffs = -1700;
	  y = A[(lat + 50) / 5] - 32;
	} /* TBD: else if ((lat >= -45) && (lat <= 45) && (lng >=30) && (lng <= 175)) {
	  // E
	  fname = a ? (e + '.gif') : 'blank.png';
	  size = 63;
	  step = 60;
	  xoffs = -1700;
	  y = A[(lat + 50) / 5] - 34;
	} */ else {
	  continue;
	}
	content = '<div><div style="position:absolute;left:0px;left:0px;clip:rect(0px,' + size + 'px,' + size + 'px,0px);width:' + size + 'px;height:' + size + 'px;">' +
		  '<img src="http://aviationweather.gov/data/iffdp/' + fname + '" style="position:absolute;top:-' + y + 'px;left:' + (xoffs - step / 5 * lng) + 'px;" />' +
		  // TBD: change 'wta' to something more sensible
		  '<a href="javascript:void(0)" onclick="wta.click(' + lat + ',' + lng + ')"><img src="/img/button.png" style="border:0px;position:absolute;left:' + (size / 2 - 4) + 'px;top:' + (size / 2 - 4) + 'px;" /></a>' +
		  '</div></div>';
	var l = new ELabel(new GLatLng (lat, lng), content, 'wta', new GSize(-size/2,-size/2));
	els.push(l);
	map.addOverlay(l);
      }
    }
  }

  this.click = click;
  this.map = map;
  wt();
  GEvent.addListener(map, 'moveend', wt);
  GEvent.addListener(map, 'zoomend', wt);
}
////////////////////////////////////////////////////////////////////////
function icons() {
  for (var m in mApts) map.removeOverlay(mApts[m]);
  for (var m in mMets) map.removeOverlay(mMets[m]);
  // TBD: restrict to zoom level: if (map.getZoom() < 7) return;
  if (map.getZoom() < 7) return;
  var b = map.getBounds();
  var sw = b.getSouthWest();
  var ne = b.getNorthEast();
  new XHR("/apts.php4?t=apt&n=200&y0=" + sw.lat() + "&y1=" + ne.lat() + "&x0=" + sw.lng() + "&x1=" + ne.lng(), function(response) {
    if (!response) return;
    for (var i = 0; i < response.length - 1; i += 6) {
      var m = new GMarker(new GLatLng(response[i + 2], response[i + 3]), {icon:aicon, title:response[i + 1] + " (" + response[i] + ")"});
      m._gmazetteerName=response[i + 1] + " (" + response[i] + ")";
      m._icao = response[i];
      map.addOverlay(m);
      mApts[response[i]] = m;
    }
  });
  var b = map.getBounds();
  var sw = b.getSouthWest();
  var ne = b.getNorthEast();
  new XHR("/apts.php4?t=met&n=100&y0=" + sw.lat() + "&y1=" + ne.lat() + "&x0=" + sw.lng() + "&x1=" + ne.lng(), function(response) {
    if (!response) return;
    for (var i = 0; i < response.length - 1; i += 6) {
      var m = new GMarker(new GLatLng(response[i + 2], response[i + 3]), {icon:taf, title:response[i + 1] + " (" + response[i] + ")"});
      m._gmazetteerName=response[i + 1] + " (" + response[i] + ")";
      m._icao = response[i];
      map.addOverlay(m);
      mMets.push(m);
    }
  });
}

var wtrtas = '';
var wtrws = '';
var wtrwd = '';
var gcc;
var gcd;
var dnm;
var dsm;
var dkm;

function d2r(d){return d/180*Math.PI;}
function r2d(r){d=r/Math.PI*180;while(d<0)d+=360;while(d>360)d-=360;return d;}

function gc(isdst) {
  with (Math) {
    var lat0 = d2r(dpt.getPoint().lat());
    var lat1 = d2r(dst.getPoint().lat());
    var lng0 = d2r(dpt.getPoint().lng());
    var lng1 = d2r(dst.getPoint().lng());
    var n = floor(abs(r2d(lng1 - lng0)) / 5);
    if (n == 0) n = 1;
    var s = 1 / n;
    var d = acos(sin(lat0)*sin(lat1)+cos(lat0)*cos(lat1)*cos(lng0-lng1));
    var wpts = [];
    for (var i = 0; i <= n; i++) {
      var f=i/n;
      var a=sin((1-f)*d)/sin(d);
      var b=sin(f*d)/sin(d);
      var x=a*cos(lat0)*cos(lng0)+b*cos(lat1)*cos(lng1);
      var y=a*cos(lat0)*sin(lng0)+b*cos(lat1)*sin(lng1);
      var z=a*sin(lat0)+b*sin(lat1);
      var lat=r2d(atan2(z,sqrt(x*x+y*y)));
      var lng=r2d(atan2(y,x));
      wpts.push(new GLatLng(lat,lng));
    }

    var tc0=acos((sin(lat1)-sin(lat0)*cos(d))/(sin(d)*cos(lat0)));
    if (sin(lng1-lng0)<0)tc0=2*PI-tc0;
    var tc1=acos((sin(lat0)-sin(lat1)*cos(d))/(sin(d)*cos(lat1)))+PI;
    if (sin(lng0-lng1)<0)tc1=2*PI-tc1;

    dnm = round(r2d(d)*60);
    dsm = round(r2d(d)*69.047);
    dkm = round(r2d(d)*111.12);

    var gd = ge('gcd');
    if (gd) gd.replaceChild(ct('Distance: ' + dnm + ' nm / ' + dsm + ' sm / ' + dkm + ' km'), gd.firstChild);

    var gc = ge('gcc');
    if (isdst) {
      if (gc) gc.replaceChild(ct('Course: ' + (gcc = round(r2d(tc1)))), gc.firstChild);
    } else {
      if (gc) gc.replaceChild(ct('Course: ' + (gcc = round(r2d(tc0)))), gc.firstChild);
    }

    if (gcl) map.removeOverlay(gcl);
    map.addOverlay(gcl = new GPolyline(wpts, "#0000ff", 3, 1));
  }
}

function wtrf() {
  with (Math) {
    wtrtas = parseFloat(ge('wtrtas').value);
    wtrws = parseFloat(ge('wtrws').value);
    wtrwd = d2r(parseFloat(ge('wtrwd').value));
    switch (ge('wtrwsu').options[ge('wtrwsu').selectedIndex].text) {
    case 'kts': break;
    case 'smh': wtrws = wtrws*60/69.047; break;
    case 'kmh': wtrws = wtrws*60/111.12; break;
    default: break;
    }
    var asu;
    switch (asu=ge('wtrasu').options[ge('wtrasu').selectedIndex].text) {
    case 'kts': break;
    case 'smh': wtrws=wtrws*69.0457/60; break;
    case 'kmh': wtrws=wtrws*111.12/60; break;
    default: break;
    }

    var c = gcc / 180 * PI;
    var swc = (wtrws / wtrtas) * sin(wtrwd - c);
    if (abs(swc) > 1) {
      ge('wtrhdg').value='';
      ge('wtrgs').value='';
      alert('Course cannot be flown - wind too strong!');
      return false;
    } else  {
      var hd = c + asin(swc);
//alert(c + " " + wtrtas + " " + wtrws + " " + wtrwd + " " + swc + " " + hd + " " + gs);
      while (hd < 0) hd = hd + 2 * PI;
      while (hd > 2 * PI) hd = hd - 2 * PI;
      var gs = wtrtas * sqrt(1 - swc * swc) - wtrws * cos(wtrwd - c);
      if (gs < 0) {
	ge('wtrhdg').value='';
	ge('wtrgs').value='';
	alert('Course cannot be flown - wind too strong!');
	return false;
      }
    }
    ge('wtrhdg').value = round(r2d(hd));
    ge('wtrgs').value = round(gs);
    var d = dnm;
    if (gs != 0) ge('wtrete').value = round(d / gs * 60);
    var gsu = ge('wtrgsu');
    if (gsu.firstChild) gsu.removeChild(gsu.firstChild);
    ac(gsu, ct(asu));
  }
  return false;
}

function revtr() {
  var newdst = dpt;
  var newdpt = dst;
  setDpt(newdpt._icao);
  setDst(newdst._icao);
}

function setDpt(icao) {
  if (dpt) {
    map.removeOverlay(dpt)
    var r = ge('trrev');
    if (false && r) {
      var a = ce('a');
      ac(a, ct('Reverse track'));
      a.href = '#';
      a.onclick = revtr;
      r.replaceChild(a, r.firstChild);
    }
  }
  dpt = new GMarker(mApts[icao].getPoint(), {icon:dptIcon, title:'Departure', draggable:true});
  map.addOverlay(dpt);
  dpt.enableDragging();
  GEvent.addListener(dpt, 'dragend', function() {gc(false);});
  if (dst) {
    gc(false);
    var l = ge('dst');
    if (l) l.removeChild(l.firstChild);
    var oe = ge('oe');
    if (oe) oe.appendChild(ct('destination: ' + dst._gmazetteerName));
    var oc = ge('oc');
    var a = ce('a');
    a.appendChild(ct('Center view there'));
    a.href = '#';
    a.onclick = function() {map.setCenter(mApts[dst._icao].getPoint());};
    if (oc) oc.appendChild(a);
    var wtr = ge("wtr");
    if (wtr) {
      ge('wtrtas').value = wtrtas;
      ge('wtrws').value = wtrws;
      ge('wtrwd').value = wtrwd/Math.PI*180;
      if (parseFloat(wtrtas)) wtrf();
      wtr.style.display = 'block';
    }
  }
  return false;
}

function setDst(icao) {
  if (dst) map.removeOverlay(dst);
  dst = new GMarker(mApts[icao].getPoint(), {icon:dstIcon, title:'Destination', draggable:true});
  map.addOverlay(dst);
  dst.enableDragging();
  GEvent.addListener(dst, 'dragend', function() {gc(true);});
  if (dpt) {
    gc(true);
    var l = ge('dpt');
    if (l) l.removeChild(l.firstChild);
    var oe = ge('oe');
    if (oe) oe.appendChild(ct('departure: ' + dpt._gmazetteerName));
    var oc = ge('oc');
    var a = ce('a');
    a.appendChild(ct('Center view there'));
//alert(mApts[dpt._icao].getPoint());
    a.href = '#';
    a.onclick = function() {map.setCenter(mApts[dpt._icao].getPoint());};
    if (oc) oc.appendChild(a);
    var wtr = ge("wtr");
    if (wtr) {
      ge('wtrtas').value = wtrtas;
      ge('wtrws').value = wtrws;
      ge('wtrwd').value = wtrwd/Math.PI*180;
      if (parseFloat(wtrtas)) wtrf();
      wtr.style.display = 'block';
    }
  }
  return false;
}

function urlto(search) {
  location.href = 'http://' + location.hostname + '/' + search;
  return false;
}

var lw;
function iwm(kind, icao) {
  var skind;
  switch (kind) {
  case 1: skind = 'TAF'; break;
  default: skind = 'METAR'; break;
  }
  var w = map.getInfoWindow();
  lw = document.getElementById('lw');
  if (lw) switch (skind) {
  case 'TAF': lw.appendChild(document.createTextNode('loading TAF...')); break;
  case 'METAR': lw.appendChild(document.createTextNode('loading METAR...')); break;
  default: lw.appendChild(document.createTextNode('loading...')); break;
  }
  var x = new XHR('/met/rep.php4?kind=' + skind + '&icao=' + icao, function(r) {
    map.closeInfoWindow();
    if (lw) lw.removeChild(lw.firstChild);
    map.openInfoWindowHtml(w.getPoint(), '<h1>' + r[0].replace(/\t/g, '<br />') + '</h1><div><a href="#" onclick="for (i in mMets) if (mMets[i]._icao == ' + "'" + icao + "'" + ') gm.openInfoWindow(mMets[i])" style="color:#0000ff;">back</a></div>');
  });
}

window.onload = function() {
  hta = ge("hta");
  hti = ge("hti");
  txt = ge("txt");
  geoc = new GClientGeocoder();
  ge("f").onsubmit = function() {
    geoc.getLatLng(ge('a').value, function(p) {
      if (!p) return;
      map.setCenter(p);
      // TBD: set marker at found position
    });
    return false;
  };
  hta.onclick = ht;
  var xhr = new XHR('http://gmazetteer.airspace-v.com/lib/tnails.php4?name=United+States', function(imgs) {
    var j = 0;
    for (var i = 0; i < imgs.length - 1; i += 3) {
      if (j > 2) break;
      var img = ge("im" + j);
      img.setAttribute("src", imgs[i]);
      img.setAttribute("alt", imgs[i+1]);
      var a = ge("ima" + j);
      a.setAttribute("title", imgs[i+1]);
      a.setAttribute("href", imgs[i+2]);
      j++;
    }
  });

  ge('u').onclick = function() {
    var p = map.getCenter();
    urlto('loc', 'lat=' + p.lat() + '&lng=' + p.lng() + '&z=' + map.getZoom());
  }

  map = new GMap2(ge("map"));
  map.addControl(new GMapTypeControl());
  map.addControl(new GLargeMapControl());
  map.addControl(new GScaleControl());
  // new GKeyboardHandler(map);
  var center = new GLatLng(38.9144, -77.0763);
  map.setCenter(center, 7);
  map.setMapType(G_SATELLITE_MAP);
  gm = new GMazetteer(map);
  gm.setPatchInfoWindow(function(o, tabs) {
    var i = o.getIcon();
    for (var j in tabs[0]) if (tabs[j][0] == 'Info') break;
    switch (i) {
    case aicon:
      tabs[j][1] = tabs[j][1].replace(/<\/h1>/, '</h1><p><img src="/img/url.png" width=16 height=16 alt="" /><a id=uw onclick="urlto(' + "'apt/" + o._icao + "'"  + ')" href="#">URL to this airfield</a></p>');
      break;
    case taf:
      tabs[j][1] = tabs[j][1].replace(/<\/h1>/, '</h1><p><img src="/img/url.png" width=16 height=16 alt="" /><a id=uw onclick="urlto(' + "'?met=" + o._icao + "'"  + ')" href="#">URL to this station</a></p>');
      break;
    default:
      tabs[j][1] = tabs[j][1].replace(/<\/h1>/, '</h1><p><img src="/img/url.png" width=16 height=16 alt="" /><a id=uw onclick="urlto(' + "'loc/" + o._gmazetteerIdx + "'"  + ')" href="#">URL to this locality</a></p>');
      break;
    }
    if ((i == aicon) || (i == dptIcon) || (i == dstIcon)) {
      var nav = '<h1 id=iwh1 class=iwh1>' + o._gmazetteerName + '</h1><table class=iwtxt style="width:400px;">' +
	'<tr><td>Set this airfield as</td>' +
	'<td><a href="#" onclick="map.setCenter(mApts[' + "'" + o._icao + "'" + '].getPoint())">Center view here.</a></tr></td>' +
	(((dpt._icao && (dpt._icao == o._icao)) || (dst._icao && (dst._icao == o._icao))) ? '<tr><td>&nbsp;</td>' : '<tr><td id=dpt><a href="#" onclick="setDpt(' + "'" + o._icao + "'" + ')">departure</a></td>') +
	'<td id=oe></td></tr>' +
	(((dst._icao && (dst._icao == o._icao)) || (dpt._icao && (dpt._icao == o._icao))) ? '<tr><td>&nbsp;</td>' : '<tr><td id=dst><a href="#" onclick="setDst(' + "'" + o._icao + "'" + ')">destination</a></div>') +
	'<td id=oc></td></tr>' +
	'<tr><td id=gcd colspan=2>&nbsp;</td></tr>' +
	'<tr><td id=gcc>&nbsp;</td><td id=trrev>&nbsp;</td><td&nbsp;</td></tr>' +
	'<tr><td colspan=2><span id=wtr class=wtr><form id=wtrf action="#">TAS: <input id=wtrtas class=wtrin maxlength=6 /> <select id=wtrasu><option>kts</option><option>smh</option><option>kmh</option></select> WS: <input id=wtrws class=wtrin maxlength=6 /> <select id=wtrwsu><option>kts</option><option>smh</option><option>kmh</option></select> WD: <input id=wtrwd class=wtrin maxlength=6 /> <input id=wtrc type=submit value="=>" /><br />HDG: <input id=wtrhdg class=wtrout readonly /> GS: <input id=wtrgs class=wtrout readonly /> <span id=wtrgsu></span> ETE: <input id=wtrete class=wtrout readonly /> min</form></span></td></tr>' +
      '</table>';
      tabs.unshift(['NAV', nav]);
    }
    if (i == taf) {
      var met = '<h1 class=iwh1>' + o._gmazetteerName + '</h1><div>weather station<br />show <a href="#" onclick="iwm(0,' + "'" + o._icao + "'" + ')">METAR</a> / <a href="#" onclick="iwm(1,' + "'" + o._icao + "'" + ')">TAF</a></div><br /><div id="lw"></div>';
      tabs.unshift(['MET', met]);
    }
    if (i=o._gmazetteerIdx) {
      var i=o._gmazetteerIdx;
      var weather = 
      '<table id=wt style="width:400px;font-size:12px;">' +
      '<tr style="height:24px;"><th id=w0h align=left colspan=2></th></tr>' +
      '<tr><th align=left style="height:12px;">Yahoo! Weather</th>' +
      '<td rowspan=5 valign=top><img id=wb src=\""></td>' +
      '</tr>' +
      '<tr style="height:12px;"><td id=wa></td></tr>' +
      '<tr style="height:12px;"><td id=wc></td></tr>' +
      '<tr style="height:12px;"><td id=wsun></td></tr>' +
      '<tr style="height:12px;"><th align=left>Forecast</th></tr>' +
      '<tr style="height:12px;"><td colspan=2 id=w0d></td></tr>' +
      '<tr style="height:12px;"><td colspan=2 id=w1d></td></tr>' +
      '<tr style="height:12px;"><td colspan=2 id=w2d></td></tr>' +
      '</table>';
      weather=weather.replace('wt','wt'+i).replace('wsun','wsun'+i).replace('w0h','w0h'+i).replace('w1h','w1h'+i).replace('wa','wa'+i).replace('wb','wb'+i).replace('wc','wc'+i).replace('w0d','w0d'+i).replace('w1d','w1d'+i).replace('w2d','w2d'+i);
      tabs.push(['Weather', weather]);
      var i = o._gmazetteerIdx;
      new XHR('weather.php4?i=' + i , function(r) {
	var c=[];
	var f=[];
	if (!r) return;
	if (r[0] == 'around') {
	  var ul = ce('ul');
	  for (var k=1;k<r.length-1;k+=2) {
	    var l = r[k];
	    var a=ce('a');
	    ac(a,ct(r[k+1]));
	    a.setAttribute('href','/loc/' + r[k] + '?zoom=' + map.getZoom());
//a.onclick = function(){alert('NYI - TBD');return false;}
//	    a.onclick = function(){alert(l + " " + gm.getMarker(l));gm.openInfoWindow(gm.getMarker(l));return false;}
	    var li = ce('li');
	    ac(li,(a));
	    ac(ul,(li));
	  }
	  var p = ac(ce('p'),ct('Yahoo! Weather not available here, please try locality around:'));
	  var c = ge('wt'+i).parentNode;
	  c.replaceChild(p, ge('wt'+i));
	  ac(c, ul);
	  return;
	}
	r.shift();
	function f2c(f){return Math.round((f-32)*5/9);}
	function c2f(c){return Math.round(c*9/5+32);}
	function i2m(i){return Math.round(i*33.864*2)/2;}
	function m2i(i){return Math.round(i/.33864)/100;}
	function t(n, s) {var o=ge(n+i);if(o)ac(o,ct(s));}

	switch (r[5]) {
	case 'c':
	case 'C':
	  c[4] = r[4]; f[4] = c2f(r[4]);
	  c[9] = r[9]; f[9] = c2f(r[9]);
	  c[10] = r[10]; f[10] = m2i(r[10]);
	  for (var k=18; k<r.length;k+=4) {
	    c[k] = r[k]; f[k] = c2f(r[k]);
	    c[k+1] = r[k+1]; f[k+1] = c2f(r[k+1]);
	  }
	  break;
	case 'f':
	case 'F':
	  f[4] = r[4]; c[4] = f2c(r[4]);
	  f[9] = r[9]; c[9] = f2c(r[9]);
	  f[10] = r[10]; c[10] = i2m(r[10]);
	  for (var k=18; k<r.length;k+=4) {
	    f[k] = r[k]; c[k] = f2c(r[k]);
	    f[k+1] = r[k+1]; c[k+1] = f2c(r[k+1]);
	  }
	  break;
	default:
	  break;
	}

	t('w0h', r[2]);
	t('wa', r[3]+', '+f[4]+'F ('+c[4]+'C), '+f[10]+'in ('+c[10]+'mb)');
	var j = ge('wb'+i);
	if (j) {j.src=r[13]; j.alt=r[2];}
	t('wsun', 'sunrise: ' + r[14] + ' LT, sunset: ' + r[15] + ' LT');
	var d;
	switch (Math.round(r[8]/45)) {
	case 0: // fall through
	case 8: d = 'N'; break;
	case 1: d = 'NE'; break;
	case 2: d = 'E'; break;
	case 3: d = 'SE'; break;
	case 4: d = 'S'; break;
	case 5: d = 'SW'; break;
	case 6: d = 'W'; break;
	case 7: d = 'NW'; break;
	default: d = ''; break;
	}
	if (r[6] == 0) d = '';
	t('wc', 'wind '+d+' '+r[6]+' '+r[7]+', wind chill '+f[9]+' F ('+c[9]+'C)');
	for (var k=16;k<Math.min(21,r.length);k+=4){
	  t('w'+(k-16)/4+'d', r[k]+' '+r[k+1]+' high '+f[k+2]+'F ('+c[k+2]+'C) low '+f[k+3]+'F ('+c[k+3]+'C)');
	}
      });
    }
    var s;
    // links tab
    if ((o.getIcon() == aicon) || (o.getIcon() == dptIcon) || o.getIcon() == dstIcon) {
      s = 'apt%3D' + o._icao;
    } else if (o.getIcon() == taf) {
      s = 'met%3D' + o._icao;
    } else if (o._gmazetteerIdx) {
      s = 'loc%3D' + o._gmazetteerIdx;
    }
    var i=o._gmazetteerIdx;
    links = '<h1 class=iwh1>Links</h1><ul id=l'+i+'></ul><div style="width:360px;"><a href="link.php4?i=' + s + '" target=link>Get listet here!</a></div>';
    tabs.push(['Links', links]);
    new XHR('links.php4?i='+i, function(r){
      if (!r) return;
      var l=ge('l'+i);
      for (i =0; i < r.length;i+=3) {
	var e=ce('li');
	var a=ce('a');
	var t=ct(r[i]);
	e.appendChild(a);
	l.appendChild(e);
      }
    });
    return tabs;
  });
  icons();
  GEvent.addListener(map,"moveend", icons);
  setTimeout("ht()", 3000);
  GEvent.addListener(map, "mousemove", function(point){
    var latLngStr5 = 'lat: ' + point.y.toFixed(5) + ', long: ' + point.x.toFixed(5);
    ge("coords").value = latLngStr5; 
  });
  GEvent.addListener(map, "infowindowopen", function() {
    var h = ge('iwh1');
    var i = false;
    var w = ge("wtr");
    if (w) w.style.display = "none";
    var w = ge("wtrf");
    if (w) w.onsubmit = wtrf;
    if (h) i = h.firstChild.data.substr(-5,4);
    if (i == dpt._icao) setDpt(dpt._icao);
    if (i == dst._icao) setDst(dst._icao);
  });
  wta = new WTAloft(map);
  var p = document.getElementById('prefs');
  if(p)p.onclick=function(){var c=map.getCenter();wta.click(c.lat(),c.lng());};
/*  var z = map.getPane(G_MAP_MARKER_PANE);
  var ima2 = ge('ima2');
  if (ima2)     GEvent.addListener(map, 'move', function() {
    ima2.style.zIndex = -1;
  });
*/
  var hadx;
  GEvent.addListener(map, 'infowindowopen', function() {
    ge('ima0').style.display = 'none';
    hadx = ge('had').style.left;
    // TBD: correct to ge('home').style.left - this has to be set
    ge('had').style.left = '100px';
    ge('ima1').style.display = 'none';
    ge('ima2').style.display = 'none';
  });
  GEvent.addListener(map, 'infowindowclose', function() {
    ge('ima0').style.display = 'block';
    ge('had').style.left = hadx;
    ge('ima1').style.display = 'block';
    ge('ima2').style.display = 'block';
  });
}

window.onunload=GUnload;
function ht() {
  txt.style.display = "none";
  ge('home').style.width = "240px";
  ge('in').style.display = "none";
  ge('url').style.display = "none";
  // ge('h').style.fontSize = "12px";
  hta.onclick = st;
  hta.setAttribute("title", "show text");
  hti.setAttribute("src", "/img/st.png");
  hti.setAttribute("alt", "show text");
}

function st() {
  txt.style.display = "block";
  ge('home').style.width = "640px";
  ge('in').style.display = "inline";
  ge('url').style.display = "inline";
  // ge('h').style.fontSize = "30px";
  hta.onclick = ht;
  hta.setAttribute("title", "hide text");
  hti.setAttribute("src", "/img/ht.png");
  hti.setAttribute("alt", "hide text");
}