var map = null;
var linkinfo;
var physicalMaxLevel;
var geocoder = null;
//##//var reloadcon = null;
var countboxText = null;
var overlays = new Array();
overlays["new"] = null;
overlays["ruler"] = new Array();
overlays["locations"] = new Array();
overlays["links"] = new Array();
var locations = new Array();
var links = new Array();
var lines = new Array();
var markers = new Array();

function initialize(lat, lng, res) {
  $('#visibox').hide();
  $('#southeastcontainer').hide();
  google.maps.visualRefresh=true;
        var mapOptions = {
          center: new google.maps.LatLng(lat, lng),
          zoom: res,
	  streetViewControl: false,
          mapTypeId: google.maps.MapTypeId.ROADMAP,
          mapTypeControlOptions: {
            mapTypeIds: [google.maps.MapTypeId.ROADMAP, google.maps.MapTypeId.HYBRID , google.maps.MapTypeId.SATELLITE , google.maps.MapTypeId.TERRAIN ],
	    style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
	  }
        };
  map = new google.maps.Map(document.getElementById("map"),
    mapOptions);
//##//  deaktiviert 2013112 goole maps api v3 incompatibel
//##//  map.disableDoubleClickZoom();
//##//  map.enableScrollWheelZoom();

//##//  // openStreetMap
//##//  var copyOSM = new GCopyrightCollection("<a href=\"http://www.openstreetmap.org/\">OpenStreetMap</a>");
//##//  var copyOGDGraz = new GCopyrightCollection("Open Government Data Graz");
//##//  copyOSM.addCopyright(new GCopyright(1, new GLatLngBounds(new google.maps.LatLng(-90,-180), new google.maps.LatLng(90,180)), 0, " "));
//##//  var tilesOsmarender = new GTileLayer(copyOSM, 1, 17, {tileUrlTemplate: 'http://tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png'});
//##//  var mapOsmarender = new GMapType([tilesOsmarender], G_NORMAL_MAP.getProjection(), "openSM", {urlArg: 'y'});
//##//  map.addMapType(mapOsmarender);
//##//  var tilesMapnik = new GTileLayer(copyOSM, 1, 17, {tileUrlTemplate: 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png'});
//##//  var mapMapnik = new GMapType([tilesMapnik],     G_NORMAL_MAP.getProjection(), "Mapnik", {urlArg: 'x'});
//##//  map.addMapType(mapMapnik);
//  var tilesOpenGeoServer = new GTileLayer(copyOGDGraz, 1, 17, {tileUrlTemplate: 'http://services.opengeoserver.org/tiles/1.0.0/globe.aerial_EPSG3857/${Z}/${X}/${Y}.png?origin=nw'});
//  var mapOpenGeoServer = new GMapType([tilesOpenGeoServer], G_NORMAL_MAP.getProjection(), "OpenGeoServer");
//  map.addMapType(mapOpenGeoServer);

//##//  physicalMaxLevel = map.getCurrentMapType().getMaximumResolution();
//##//  if(res > physicalMaxLevel) {
//##//    map.setMapType(G_NORMAL_MAP);
//##//    map.setZoom(res);
//##//  }
//##//  map.addControl(new RulerControl());
//##//  reloadcon = new reloadcontrol();
//##//  map.addcontrol(reloadcon);
//##//  map.addControl(new GSmallMapControl(), new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(10,20)));
//##//  map.addControl(new GMapTypeControl(), new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(50,10)));

  google.maps.event.addListener(map, "addoverlay", onAddOverlay);    
  google.maps.event.addListener(map, "zoomend", onZoom);    
  google.maps.event.addListener(map, "click", onMapClick);    
  
  lineinfo = document.createElement("div");
  document.getElementById("map").appendChild(lineinfo);
  lineinfo.style.visibility = "hidden"
  
  dnsinfo = document.createElement("div");
  document.getElementById("map").appendChild(dnsinfo);
  dnsinfo.style.visibility = "hidden"
  
//##//  var mt = map.getMapTypes();
//##//  for (var i=0; i<mt.length; i++) {
//##//    mt[i].getMinimumResolution = function() {return 0;}
//##//    mt[i].getMaximumResolution = function() {return 22;}
//##//  }

//##//  geocoder = new google.maps.Geocoder();

  var countbox = document.getElementById("countbox");
  countboxText = document.createTextNode("Aktiv: 0");
  countbox.appendChild(countboxText);

//##//  reloadcon.started();
  $.get( "data.php",onData);
}

function onAddOverlay(overlay) {
  switch(overlay.overlaytype) {
    case "location": overlays["locations"].push(overlay); break;
    case "link": overlays["links"].push(overlay); break;
    case "new": {
      if(overlays["newmarker"]) {
        map.removeOverlay(overlays["newmarker"]);
      }
      overlays["newmarker"] = overlay; 
      break;
    }
    case "ruler": {
      if(overlays["ruler"][overlay.overlaysubtype]) {
        map.removeOverlay(overlays["ruler"][overlay.overlaysubtype]);
      }
      overlays["ruler"][overlay.overlaysubtype] = overlay;
      break;
    }
  }
}

function onZoom(oldLevel, newLevel)
{
  if(newLevel > physicalMaxLevel) {
  //  map.setMapType(G_SATELLITE_MAP);
  }
}

function onMapClick(overlay, point)
{
  if(!overlay) {
    map.setCenter(point);
    setNewMarker(point);
  }
}

//##//function onData(data, responseCode) {
//##//  if (responseCode < 200 || responseCode > 299) {
//##//    reloadcon.finished();
//##//    return alert("Fehler: Konnte die Daten nicht laden!\n(Server Antwort-Code: " + responseCode + ")");
//##//  }
//##//  reloadcon.loaded();
function onData(data) {
//##//  xmlData = GXml.parse(data);
//##//alert("Data Loaded: " +data.slice( 0, 100 ));
  //##//xmlData = $.parseXML(data.responseText);
  xmlData = data;

  for(var loc in overlays["locations"]) {
    map.removeOverlay(overlays["locations"][loc]);
  }
  overlays["locations"] = [];
  locations = [];
  if (xmlData) {
    drawLocations(xmlData);
  }

  for(var link in overlays["links"]) {
    map.removeOverlay(overlays["links"][link]);
  }
  overlays["links"] = [];
  links = [];
  if (xmlData) {
    drawLinks(xmlData);
  }

  if (xmlData) {
	  var element = xmlData.getElementsByTagName("count");
	  var count = element[0].getAttribute("number");
	  countboxText.data = "Aktiv: " + count;
  }
  
//##//  reloadcon.finished();
}

function drawLocations(xmlData) {
  var element = xmlData.getElementsByTagName("node");
  for (var i = 0; i< element.length; i++) {
    var id = parseInt(element[i].getAttribute("id"));
    locations[id] = new Location(element[i]);

    var marker = new google.maps.Marker({position: locations[id].point, icon: makeIcon(locations[id].state)});
    marker.overlaytype = "location";
    marker.locid = id;
    google.maps.event.addListener(marker, "click", onLocationClick);
//##//    map.addOverlay(marker);
    marker.setMap(map);
    markers.push(marker);
  }
  if(document.visibleform.elements["offline"].checked) {
    toggleVisible("offline");
  }
  if(document.visibleform.elements["online"].checked) {
    toggleVisible("online");
  }
}

function Location(element) {
  var location = new Object();
  location.name = element.getAttribute("name");
  var lat  = parseFloat(element.getAttribute("lat"));
  var lng  = parseFloat(element.getAttribute("lng"));
  location.point = new google.maps.LatLng(lat, lng);
  location.pixel_x = parseInt(element.getAttribute("pixel_x"));
  location.pixel_y = parseInt(element.getAttribute("pixel_y"));
  location.state = element.getAttribute("state");
  location.gallery_link = element.getAttribute("gallery_link");
  location.dnsnames = element.getAttribute("router_links");

  return location;
}

function onLocationClick(latlng) {
  var html = '<div class="locinfo">';
  html += '<b>' + locations[this.locid].name + '</b>';
  html += '<table class="locinfo">';
  html += '<tr><td>Breitengrad:</td><td>&nbsp;</td><td>' + convertCoords(locations[this.locid].point.lat()) + '</td></tr>';
  html += '<tr><td>Längengrad:</td><td>&nbsp;</td><td>' + convertCoords(locations[this.locid].point.lng()) + '</td></tr>';
  html += '<tr><td>Datenbank:</td><td>&nbsp;</td><td><a href="http://manman.graz.funkfeuer.at/location/show/' + this.locid + '" target="_blank">Link-Database</td></tr>';
  html += '<tr><td>Smokeping:</td><td>&nbsp;</td><td><a href="http://stats.graz.funkfeuer.at/smokeping/?target=Funkfeuer.' + locations[this.locid].name + '" target="_blank">Link-Smokeping</td></tr>';
  if(locations[this.locid].gallery_link) {
    html += '<tr><td>Galerie:</td><td>&nbsp;</td><td><a href="' + locations[this.locid].gallery_link + '" target="_blank">Link-Galerie/Knoten</td></tr>';
  } else {
    html += '<tr><td>Galerie:</td><td>&nbsp;</td><td><a href="http://gallery.funkfeuer.at/v/Graz/Knoten/" target="_blank">Link-Galerie</td></tr>';
  }
  if (locations[this.locid].dnsnames){
    var dnsname = locations[this.locid].dnsnames.split(";");
    for (var i = 0;i < dnsname.length; ++i){
      if (dnsname[i]!==""){
        if(dnsname[i].indexOf(" (")>=0) {
          link=dnsname[i].substring(0,dnsname[i].indexOf(" ("));
        } else {
        link=dnsname[i];
        }
        html += '<tr><td> Router:</td><td>&nbsp;</td><td><a href="http://' + link+ '.ext.graz.funkfeuer.at/" target="_blank">'+dnsname[i]+'</td></tr>';
      }
    }                                                                              
  } 
  html += '</table>';
  html += '</div>';
  var infowindow = new google.maps.InfoWindow({content: html});
  infowindow.open(map,this);
}

function onLineClick(line,latlng) {
//  var html ='<div id="linkbox" class="box">';
  var html ='<div class="locinfo">';
  html += '<b>'+line.name+'</b>';
  html += '<table class="linkinfo">';
  if (line.dnsfrom){
    var dnsfrom = line.dnsfrom.split(";");
    for (var i = 0;i < dnsfrom.length; ++i){
      if(dnsfrom[i].indexOf(" (")>=0) {
        link=dnsfrom[i].substring(0,dnsfrom[i].indexOf(" ("));
        } else {
        link=dnsfrom[i];
      }
      html += '<tr><td> Router:</td><td>&nbsp;</td><td><a href="http://' + link+ '.ext.graz.funkfeuer.at/" target="_blank">'+dnsfrom[i]+'</td></tr>';
    }
  } 
    
  if(line.dnsto){
    var dnsto = line.dnsto.split(";");
    for (var i = 0;i < dnsto.length; ++i){
      if(dnsto[i].indexOf(" (")>=0) {
        link=dnsto[i].substring(0,dnsto[i].indexOf(" ("));
        } else {
        link=dnsto[i];
      }
      html += '<tr><td> Router:</td><td>&nbsp;</td><td><a href="http://' + link+ '.ext.graz.funkfeuer.at/" target="_blank">'+dnsto[i]+'</td></tr>';
    }
  }
  html += '</table>';
  html += '</div>';
  map.openInfoWindowHtml(latlng,html);
}

function convertCoords(x) {
  var deg = Math.floor(x);
  var min = (x - deg) * 60;
  var sec = (min - Math.floor(min)) * 60;
  return deg + "° " + Math.floor(min) + "' " + sec.toFixed(0) + "\"";
}

function drawLinks(xmlData) {
  var element = xmlData.getElementsByTagName("link");
  for (var i = 0; i< element.length; i++) {
    var state;
    var color;
    var textcolor;
    var width;
    state="Unbekannt"
    var id = element[i].getAttribute("from") + "-" + element[i].getAttribute("to");
    links[id] = new Link(element[i]);
     
    var line = new google.maps.Polyline({path: [links[id].frompoint, links[id].topoint], strokeColor: makeColor(Math.floor(links[id].value)), strokeWeight: makeWeight(Math.floor(links[id].value))});
    line.name = id;
    line.textcolor = textcolor;
    line.state = state;
    line.overlaytype = "link";
    line.linkid = id;
    line.dnsfrom = element[i].getAttribute("dnsfrom");
    line.dnsto = element[i].getAttribute("dnsto");
    line.Routerfrom = element[i].getAttribute("from");
    line.Routerto = element[i].getAttribute("to");
    google.maps.event.addListener(line, "mouseout", function() { lineinfo.style.visibility = "hidden"; });    
    google.maps.event.addListener(line, "mouseover", function(point) { showLinkInfo(this, point)});
    google.maps.event.addListener(line, "click", function(point){onLineClick(this,point)});
//    google.maps.event.addListener(line, "click", function(latlng){map.openInfoWindowHtml(latlng, message)});     
  
    line.setMap(map);
    lines.push(marker);
  } 
  if(document.visibleform.elements["defaultroute"].checked) {
    toggleVisible("defaultroute");
  }
  if(document.visibleform.elements["bad"].checked) {
    toggleVisible("bad");
  }
  if(document.visibleform.elements["middle"].checked) {
    toggleVisible("middle");
  }
  if(document.visibleform.elements["good"].checked) {
    toggleVisible("good");
  }
  if(document.visibleform.elements["tunnel"].checked) {
    toggleVisible("tunnel");
  }
    if(document.visibleform.elements["2.4channel"].checked) {
    toggleVisible("2.4channel");
  }
  if(document.visibleform.elements["channel1"].checked) {
    toggleVisible("channel1");
  }
  if(document.visibleform.elements["channel2"].checked) {
    toggleVisible("channel2");
  }
  if(document.visibleform.elements["channel3"].checked) {
    toggleVisible("channel3");
  }
  if(document.visibleform.elements["channel4"].checked) {
    toggleVisible("channel4");
  }
  if(document.visibleform.elements["channel5"].checked) {
    toggleVisible("channel5");
  }
  if(document.visibleform.elements["channel6"].checked) {
    toggleVisible("channel6");
  }
  if(document.visibleform.elements["channel7"].checked) {
    toggleVisible("channel7");
  }
  if(document.visibleform.elements["channel8"].checked) {
    toggleVisible("channel8");
  }
  if(document.visibleform.elements["channel9"].checked) {
    toggleVisible("channel9");
  }
  if(document.visibleform.elements["channel10"].checked) {
    toggleVisible("channel10");
  }
  if(document.visibleform.elements["channel11"].checked) {
    toggleVisible("channel11");
  }
  if(document.visibleform.elements["channel12"].checked) {
    toggleVisible("channel12");
  }
  if(document.visibleform.elements["channel13"].checked) {
    toggleVisible("channel13");
  }
  if(document.visibleform.elements["5channel"].checked) {
    toggleVisible("5channel");
  }
  if(document.visibleform.elements["undef"].checked) {
    toggleVisible("undef"); 
  }
}
function showLinkInfo(link, point) {
  var html = '<div id="linkbox" class="box" style="border-color: ' + link.color + '">';
  if((links[link.name].frequence !== "undef") && (links[link.name].frequence !== "")){
     html += '<strong>Frequenz:</strong> ' + links[link.name].frequence + '<br />';
  } else {
     html += '<strong>Frequenz:</strong> undef <br />';
  } 
  if(links[link.name].channel !== "undef") {
    html += '<strong>Kanal:</strong> ' + links[link.name].channel + '<br />';
  } else {
    html += '<strong>Kanal:</strong> undef <br />';
  }
  if (links[link.name].value !==-1){
    html += '<strong>Mittlerer ETX:</strong> ' + links[link.name].value  + '<br />';
  } else {
    html += '<strong>Mittlerer ETX:</strong> undef <br />';
  }
  html += '<strong>Name:</strong> ' + link.name  + '<br />';
//##//  html += '<strong>Länge:</strong> ' + link.getLength().toFixed(0) + ' m<br />';
  html += '</div>';
  lineinfo.innerHTML = html;
//##//  var pos = new GControlPosition(G_ANCHOR_BOTTOM_RIGHT, new GSize(180, 0));

//##//  pos.apply(lineinfo);
  lineinfo.style.visibility = "visible";
}

function Link(element) {
  var link = new Object();
  link.from = element.getAttribute("from");
  link.fromid = parseInt(element.getAttribute("fromid"));
  var lat  = parseFloat(element.getAttribute("latfrom"));
  var lng  = parseFloat(element.getAttribute("lngfrom"));
  link.frompoint = new google.maps.LatLng(lat, lng);

  link.to = element.getAttribute("to");
  link.toid = parseInt(element.getAttribute("toid"));
  lat  = parseFloat(element.getAttribute("latto"));
  lng  = parseFloat(element.getAttribute("lngto"));
  link.topoint = new google.maps.LatLng(lat, lng);

  link.value = parseFloat(element.getAttribute("value"));
  link.channel = element.getAttribute("channel");
  link.defaultroute = element.getAttribute("defaultroute");
  link.frequence = element.getAttribute("frequence");
  return link;
}

function makeColor(value) {
  switch(value) {
    case -1: return '#0000FF';
    case 0: return '#FF0000';
    case 1: return '#33bb33';
    case 2: return '#66bb33';
    case 3: return '#ff9900';
    case 4: return '#ffcc00';
    case 5: return '#cccc33';
    default: return '#666666'
  }
}

function makeWeight(value) {
  switch(value) {
    case -1: return 2;
    case 0: return 1;
    case 1: return 3;
    case 2: return 2;
    case 3: return 1;
    case 4: return 1;
    case 5: return 1;
    default: return 1;
  }
}

function makeIcon(type) {
  var url;
  switch(type) {
    case 'ruler': url = "./img/marker_blue.png"; break;
    case 'newnode': url = "./img/marker_darkred.png"; break;
    case 'online': url = "./img/marker_online.png"; break;
    case 'tunnel': url = "./img/marker_tunnel.png"; break;
    case 'offline': url = "./img/marker_offline.png"; break;
  }
  return {
	  'url': url,
	  // This marker is 20 pixels wide by 32 pixels tall.
	  size: new google.maps.Size(12, 20),
	  // The origin for this image is 0,0.
	  origin: new google.maps.Point(0,0),
	  // The anchor for this image is the base of the flagpole at 0,32.
	  anchor: new google.maps.Point(6, 20)
  };
}

function toggleVisible(element) {
  var elements = Object();
  if (element=='bad' || element=='middle' || element=='good'){
    document.visibleform.elements["2.4channel"].checked=false;
    document.visibleform.elements["channel1"].checked=false;
    document.visibleform.elements["channel2"].checked=false;
    document.visibleform.elements["channel3"].checked=false;
    document.visibleform.elements["channel4"].checked=false;
    document.visibleform.elements["channel5"].checked=false;
    document.visibleform.elements["channel6"].checked=false;
    document.visibleform.elements["channel7"].checked=false;
    document.visibleform.elements["channel8"].checked=false;
    document.visibleform.elements["channel9"].checked=false;
    document.visibleform.elements["channel10"].checked=false;
    document.visibleform.elements["channel11"].checked=false;
    document.visibleform.elements["channel12"].checked=false;
    document.visibleform.elements["channel13"].checked=false;
    document.visibleform.elements["5channel"].checked=false;
    document.visibleform.elements["undef"].checked=false;    
  }
    if (element=='2.4channel'){
    document.visibleform.elements["channel1"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel2"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel3"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel4"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel5"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel6"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel7"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel8"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel9"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel10"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel11"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel12"].checked=document.visibleform.elements["2.4channel"].checked;
    document.visibleform.elements["channel13"].checked=document.visibleform.elements["2.4channel"].checked;
  }
  switch(element) {
    case 'defaultroute': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].defaultroute == '0');"); break;
    case 'offline': elements.overlays = overlays["locations"]; elements.select = new Function("id", "return (locations[overlays['locations'][id].locid].state == 'offline');"); break;
    case 'online': elements.overlays = overlays["locations"]; elements.select = new Function("id", "return (locations[overlays['locations'][id].locid].state != 'offline');"); break;
    case 'bad': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].value >= 6);"); break;
    case 'middle': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].value >= 3 && links[overlays['links'][id].linkid].value < 6);"); break;
    case 'good': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].value >= 0 && links[overlays['links'][id].linkid].value < 3);"); break;
    case 'tunnel': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].value == -1);"); break;
    case 'channel1': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '1');"); break;
    case 'channel2': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '2');"); break;
    case 'channel3': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '3');"); break;
    case 'channel4': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '4');"); break;
    case 'channel5': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '5');"); break;
    case 'channel6': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '6');"); break;
    case 'channel7': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '7');"); break;
    case 'channel8': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '8');"); break;
    case 'channel9': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '9');"); break;
    case 'channel10': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '10');"); break;
    case 'channel11': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '11');"); break;
    case 'channel12': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '12');"); break;
    case 'channel13': document.visibleform.elements["2.4channel"].checked=false; elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].channel == '13');"); break;
    case 'undef': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].frequence == 'undef');"); break;
    case '2.4channel': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].frequence == '2.4');"); break;
    case '5channel': elements.overlays = overlays["links"]; elements.select = new Function("id", "return (links[overlays['links'][id].linkid].frequence !=='2.4' && links[overlays['links'][id].linkid].frequence !=='undef');"); break;

  }

  if(document.visibleform.elements[element].checked) {
    hideElements(elements);
  } else {
    showElements(elements);
  }
}

function hideElements(elements) {
  for(var o in elements.overlays)
    if(elements.select(o)) elements.overlays[o].hide();
}

function showElements(elements) {
  for(var o in elements.overlays)
    if(elements.select(o)) elements.overlays[o].show();
}

function centerAndZoom(lat, lng) {
  map.setCenter(new google.maps.LatLng(lat, lng), 17);
}

function addNewNodeText(point) {
  var x_startpoint = 4080;
  var lng_startpoint = 15.43844103813;
  var dx_dlng = 50675.5176;
  var y_startpoint = 4806;
  var lat_startpoint = 47.07177327969;
  var dy_dlat = 75505.521;

  var pixel_x = parseInt(Math.floor(x_startpoint + (point.x - lng_startpoint) * dx_dlng));
  var pixel_y = parseInt(Math.floor(y_startpoint - (point.y - lat_startpoint) * dy_dlat));

  var link = 'https://manman.graz.funkfeuer.at/location/new?';
  link += 'z_x=' + Math.floor(pixel_x % 100) + '&z_y=' + Math.floor(pixel_y % 100);
  link += '&c='  + Math.floor(pixel_x / 100) + '&r='   + Math.floor(pixel_y / 100);

  var html = '<b>Neuen Knoten eintragen<br />Nutzen sie den Zoombereich aus!</b><br /><br />';
  html += '<table width="100%">';
  html += '<tr><td>Breitengrad:</td><td>&nbsp;</td><td>' + convertCoords(point.y) + '</td><td>&nbsp;</td>';
  html += '<td><form action="#" onsubmit="return false"><input type="button" value="hineinzoomen" ';
  html += 'onclick="javascript:centerAndZoom(' + point.y + ',' + point.x + ')" /></form></td></tr>';
  html += '<tr><td>Längengrad:</b></td><td>&nbsp;</td><td>' + convertCoords(point.x)+ '</td><td>&nbsp;</td>';
  html += '<td><form action="#" onsubmit="return false"><input type="button" value="Standort eintragen" ';
  html += 'onclick="window.open(\'' + link + '\')" /></form></td></tr>';
  html += '</table>';
  return html;
}

function setNewMarker(point) { 
/*
  var marker = new GMarker(point,{icon: makeIcon('newnode'), draggable: true});
  google.maps.event.addListener(marker, "dragstart", 
    function() {
      this.autoclosed = true;
      this.closeInfoWindow();
    });

  google.maps.event.addListener(marker, "dragend", 
    function(point) {
      this.openInfoWindowHtml(addNewNodeText(point));
    });

  google.maps.event.addListener(marker, "infowindowclose",
    function () {
      if(this.autoclosed == true) {
        this.autoclosed = false;
      } else {
        map.removeOverlay(overlays["newmarker"]);
        overlays["newmarker"] = null;
      }
    });

  marker.overlaytype = "newmarker";
  map.addOverlay(marker);
  marker.openInfoWindowHtml(addNewNodeText(point));
*/
		var marker = new GMarker(point,makeIcon('newnode'));
        	google.maps.event.addListener(marker,"infowindowclose",function () {
                  map.removeOverlay(marker);
        	});
       
        	map.addOverlay(marker);
        	marker.openInfoWindowHtml(addNewNodeText(point));
}

function fflogin(username, password) {
  var postbody = "username=" + encodeURIComponent(username) + "&password=" + encodeURIComponent(password) + "&login=Einloggen#";
//##//  GDownloadUrl("login.php", onFFLogin, postbody);
}

function onFFLogin(data, responseCode) {
  if (responseCode < 200 || responseCode > 299) {
    return alert("Fehler: Konnte die Daten nicht laden!\n(Server Antwort-Code: " + responseCode + ")");
  }
  xmlData = GXml.parse(data);

  var error = xmlData.getElementsByTagName("error");
  if(error.length > 0) {
    alert(error[0].getAttribute("string"));
  }
  else {
    var status = xmlData.getElementsByTagName("status");
    if(status[0].getAttribute("code") == "logged_in") {
      var username = xmlData.getElementsByTagName("username")[0].getAttribute("name");
      showFFLogout(username);

//##//      reloadcon.started();
      $.get( "data.php",onData);
    }
  }
}

function showFFLogin() {
  var html = '<form action="#" onsubmit="fflogin(this.username.value, this.password.value); this.reset(); return false">';
  html += '<table><tr>';
  html += '<td>Benutzername:</td>';
  html += '<td><input name="username" size="23" type="text" tabindex="1"/></td>';
  html += '<td rowspan="2" valign="bottom"><input name="login" type="submit" id="login" value="Einloggen" tabindex="3"></td>';
  html += '</tr><tr>';
  html += '<td>Passwort:</td>';
  html += '<td><input name="password" type="password" tabindex="2" /></td>';
  html += '</tr></table></form>';

  document.getElementById("loginbox").innerHTML = html;
}

function fflogout() {
  var postbody = "logout=Ausloggen#";
//##//  GDownloadUrl("login.php", onFFLogout, postbody);
}

function onFFLogout(data, responseCode) {
  if (responseCode < 200 || responseCode > 299) {
    return alert("Fehler: Konnte die Daten nicht laden!\n(Server Antwort-Code: " + responseCode + ")");
  }
  xmlData = GXml.parse(data);

  var error = xmlData.getElementsByTagName("error");
  if(error.length > 0) {
    alert(error[0].getAttribute("string"));
  }
  else {
    showFFLogin();

//##//    reloadcon.started();
    $.get( "data.php",onData);
  }
}

function showFFLogout(username) {
  var html = '<form action="#" onsubmit="fflogout(); return false">';
  html += 'Sie sind eingeloggt als:</br >';
  html += '<b>'+username+'</b>&nbsp;&nbsp;&nbsp;'
  html += '<input name="login" type="submit" id="logout" value="Ausloggen"></form>';

  document.getElementById("loginbox").innerHTML = html;
}

function showAddress(address) {
  if (geocoder) {
//    address += ", Graz, Austria";
    geocoder.getLatLng(address, 
      function(point) {
        if (!point) {
          alert(address + " nicht gefunden");
        } else {
          map.setCenter(point);
          setNewMarker(point);
        }
      });
  }
}

//##//function ReloadControl() {
//##//}
//##//
//##//ReloadControl.prototype = new GControl();
//##//
//##//ReloadControl.prototype.initialize = function(map) {
//##//  var container = document.createElement("div");
//##//  var btnDiv = document.createElement("div");
//##//  btnDiv.className = "btn";
//##//  btnDiv.id = "reloadbtn";
//##//  container.appendChild(btnDiv);
//##//  btnText = document.createTextNode("Daten neu laden");
//##//  btnDiv.appendChild(btnText);
//##//  google.maps.event.addDomListener(btnDiv, "click", function() {
//##//      reloadcon.started(); 
//##//      GDownloadUrl("data.php", onData);
//##//    });
//##//
//##//  map.getContainer().appendChild(container);
//##//  return container;
//##//}
//##//
//##//ReloadControl.prototype.started = function() {
//##//  btnText.data = "wird geladen...";
//##//}
//##//
//##//ReloadControl.prototype.loaded = function() {
//##//  btnText.data = "wird verarbeitet...";
//##//}
//##//
//##//ReloadControl.prototype.finished = function() {
//##//  btnText.data = "Daten neu laden";
//##//}
//##//
//##//ReloadControl.prototype.getDefaultPosition = function() {
//##//  return new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(7, 7));
//##//}


//##//function RulerControl() {
//##//}
//##//
//##//RulerControl.prototype = new GControl();
//##//
//##//RulerControl.prototype.initialize = function(map) {
//##//  var btnText;
//##//  var distBoxOuter;
//##//  var distBox;
//##//  var distText;
//##//
//##//  function measure() {
//##//    if(overlays["ruler"]["marker1"] && overlays["ruler"]["marker2"]) {
//##//      var line = [overlays["ruler"]["marker1"].getPoint(), overlays["ruler"]["marker2"].getPoint()];
//##//      var dist = overlays["ruler"]["marker1"].getPoint().distanceFrom(overlays["ruler"]["marker2"].getPoint());
//##//      dist = dist.toFixed(0)+" m";
//##//      if(parseInt(dist) > 10000) {
//##//        dist = (parseInt(dist)/1000).toFixed(1) + " km";
//##//      }
//##//      distText.data = "Entfernung: " + dist;
//##//      var poly = new GPolyline(line,'#FFFF00', 3, 1)
//##//      poly.overlaytype = "ruler";
//##//      poly.overlaysubtype = "line";
//##//      map.addOverlay(poly);
//##//    }
//##//  }
//##//
//##//  function clr(){
//##//    for(var o in overlays["ruler"]) {
//##//      map.removeOverlay(overlays["ruler"][o]);
//##//    }
//##//    overlays["ruler"] = [];
//##//    distBox.style.visibility = "hidden";
//##//    btnText.data = "Entfernung messen";
//##//  }
//##//
//##//  var container = document.createElement("div");
//##//  var btnDiv = document.createElement("div");
//##//  btnDiv.className = "btn";
//##//  btnDiv.id = "rulerbtn";
//##//  container.appendChild(btnDiv);
//##//  btnText = document.createTextNode("Entfernung messen");
//##//  btnDiv.appendChild(btnText);
//##//  google.maps.event.addDomListener(btnDiv, "click", function() {
//##//      for(var o in overlays["ruler"]) {
//##//        if(overlays["ruler"][o]) {
//##//          clr();
//##//          return;
//##//        }
//##//      }
//##//    
//##//      btnText.data = "Messung beenden";
//##//      distText.data = "Entfernung: 0 m";
//##//      distBox.style.visibility = "visible";
//##//
//##//      var pnt = map.getCenter();
//##//      marker1 = new GMarker(pnt, {icon: makeIcon('ruler'), draggable: true});
//##//      marker1.overlaytype = "ruler";
//##//      marker1.overlaysubtype = "marker1";
//##//      map.addOverlay(marker1);
//##//
//##//      marker2 = new GMarker(pnt, {icon: makeIcon('ruler'), draggable: true});
//##//      marker2.overlaytype = "ruler";
//##//      marker2.overlaysubtype = "marker2";
//##//      map.addOverlay(marker2);
//##//
//##//      google.maps.event.addListener(marker1, "drag", function() { measure(); });
//##//      google.maps.event.addListener(marker2, "drag", function() { measure(); });
//##//    });
//##//  distBoxOuter = document.createElement("div");
//##//  distBoxOuter.id = "distboxouter";
//##//  distBox = document.createElement("div");
//##//  distBox.className = "box";
//##//  distBox.id = "distbox";
//##//  distBox.style.visibility = "hidden";
//##//  distText = document.createTextNode("Entfernung: ? m");
//##//  distBox.appendChild(distText);
//##//  distBoxOuter.appendChild(distBox);
//##//  document.getElementById("map").appendChild(distBoxOuter);
//##//
//##//  map.getContainer().appendChild(container);
//##//  return container;
//##//}
//##//
//##//RulerControl.prototype.getDefaultPosition = function() {
  //##//return new GControlPosition(G_ANCHOR_BOTTOM_RIGHT, new GSize(7, 7));
//##//}