var startlat=51.365691;
var startlng=10.451526;
var startzoom=5;
var map;

var platzmarker=new Array();
var infowindow;
var contentString="";
var markerpic;
var marker=new Array();
function initMap() {
    map = new google.maps.Map(document.getElementById('map'), {
          center: {lat: startlat, lng: startlng},
          zoom: startzoom,
          minZoom:5,
          maxZoom:16,
    });
    markerpic = new google.maps.MarkerImage('/pics/platzneu.png',
          new google.maps.Size(25, 25),
          new google.maps.Point(0,0),
          new google.maps.Point(12,12)
    );
    marker[5]= new google.maps.MarkerImage('/pics/marker9.png', new google.maps.Size( 9, 9),new google.maps.Point(0,0),new google.maps.Point( 9, 9));
    marker[6]= new google.maps.MarkerImage('/pics/marker9.png', new google.maps.Size( 9, 9),new google.maps.Point(0,0),new google.maps.Point( 9, 9));
    marker[7]= new google.maps.MarkerImage('/pics/marker11.png',new google.maps.Size(11,11),new google.maps.Point(0,0),new google.maps.Point(11,11));
    marker[8]= new google.maps.MarkerImage('/pics/marker11.png',new google.maps.Size(11,11),new google.maps.Point(0,0),new google.maps.Point(11,11));
    marker[9]= new google.maps.MarkerImage('/pics/marker13.png',new google.maps.Size(13,13),new google.maps.Point(0,0),new google.maps.Point(13,13));
    marker[10]=new google.maps.MarkerImage('/pics/marker13.png',new google.maps.Size(13,13),new google.maps.Point(0,0),new google.maps.Point(13,13));
    marker[11]=new google.maps.MarkerImage('/pics/marker15.png',new google.maps.Size(15,15),new google.maps.Point(0,0),new google.maps.Point(15,15));
    marker[12]=new google.maps.MarkerImage('/pics/marker15.png',new google.maps.Size(15,15),new google.maps.Point(0,0),new google.maps.Point(15,15));
    marker[13]=new google.maps.MarkerImage('/pics/marker17.png',new google.maps.Size(17,17),new google.maps.Point(0,0),new google.maps.Point(17,17));
    marker[14]=new google.maps.MarkerImage('/pics/marker17.png',new google.maps.Size(17,17),new google.maps.Point(0,0),new google.maps.Point(17,17));
    marker[15]=new google.maps.MarkerImage('/pics/marker19.png',new google.maps.Size(19,19),new google.maps.Point(0,0),new google.maps.Point(19,19));
    marker[16]=new google.maps.MarkerImage('/pics/marker19.png',new google.maps.Size(19,19),new google.maps.Point(0,0),new google.maps.Point(19,19));
    
    infowindow = new google.maps.InfoWindow({content: ''});
    google.maps.event.addListener(map, 'dragend', ladeplaetze);
    google.maps.event.addListener(map, 'zoom_changed', ladeplaetze);
    ladeplaetze();
}
function ladeplaetze() {
 var zoom=map.getZoom();
 if (zoom<5 || zoom>16) {return;}
 markerpic=marker[zoom];
 clearmarker();
 platzmarker[42] = new google.maps.Marker({position: {lat: 54.40440706407451, lng: 11.178985834121704},map: map,icon: markerpic,title: ""});
 platzmarker[42].addListener("click", function() {gen_infowindow("1887","42")});
 platzmarker[50] = new google.maps.Marker({position: {lat: 50.685133, lng: 6.470260000000053},map: map,icon: markerpic,title: ""});
 platzmarker[50].addListener("click", function() {gen_infowindow("1893","50")});
 platzmarker[58] = new google.maps.Marker({position: {lat: 54.11313789670343, lng: 11.630809307098389},map: map,icon: markerpic,title: ""});
 platzmarker[58].addListener("click", function() {gen_infowindow("1870","58")});
 platzmarker[63] = new google.maps.Marker({position: {lat: 54.48769085175292, lng: 11.018085479736328},map: map,icon: markerpic,title: ""});
 platzmarker[63].addListener("click", function() {gen_infowindow("2255","63")});
 platzmarker[87] = new google.maps.Marker({position: {lat: 47.64714717654511, lng: 13.039140701293945},map: map,icon: markerpic,title: ""});
 platzmarker[87].addListener("click", function() {gen_infowindow("2346","87")});
 platzmarker[97] = new google.maps.Marker({position: {lat: 54.15124340741647, lng: 11.71944851422495},map: map,icon: markerpic,title: ""});
 platzmarker[97].addListener("click", function() {gen_infowindow("2330","97")});
 platzmarker[115] = new google.maps.Marker({position: {lat: 50.0984430744469, lng: 7.5766825675964355},map: map,icon: markerpic,title: ""});
 platzmarker[115].addListener("click", function() {gen_infowindow("2001","115")});
 platzmarker[128] = new google.maps.Marker({position: {lat: 50.78039, lng: 7.798530000000028},map: map,icon: markerpic,title: ""});
 platzmarker[128].addListener("click", function() {gen_infowindow("1978","128")});
 platzmarker[139] = new google.maps.Marker({position: {lat: 53.92978400122127, lng: 11.270910501480103},map: map,icon: markerpic,title: ""});
 platzmarker[139].addListener("click", function() {gen_infowindow("2278","139")});
 platzmarker[150] = new google.maps.Marker({position: {lat: 49.958847514716254, lng: 6.4238691329956055},map: map,icon: markerpic,title: ""});
 platzmarker[150].addListener("click", function() {gen_infowindow("1792","150")});
 platzmarker[152] = new google.maps.Marker({position: {lat: 51.6782502205111, lng: 7.283012866973877},map: map,icon: markerpic,title: ""});
 platzmarker[152].addListener("click", function() {gen_infowindow("1806","152")});
 platzmarker[155] = new google.maps.Marker({position: {lat: 51.87127842023198, lng: 8.672249150000008},map: map,icon: markerpic,title: ""});
 platzmarker[155].addListener("click", function() {gen_infowindow("2987","155")});
 platzmarker[156] = new google.maps.Marker({position: {lat: 53.283997907856865, lng: 13.431129455566406},map: map,icon: markerpic,title: ""});
 platzmarker[156].addListener("click", function() {gen_infowindow("2373","156")});
 platzmarker[160] = new google.maps.Marker({position: {lat: 54.12870049692955, lng: 11.64501428604126},map: map,icon: markerpic,title: ""});
 platzmarker[160].addListener("click", function() {gen_infowindow("2392","160")});
 platzmarker[164] = new google.maps.Marker({position: {lat: 47.842121161269915, lng: 8.936594724655151},map: map,icon: markerpic,title: ""});
 platzmarker[164].addListener("click", function() {gen_infowindow("2400","164")});
 platzmarker[171] = new google.maps.Marker({position: {lat: 47.79655164755936, lng: 7.548980712890625},map: map,icon: markerpic,title: ""});
 platzmarker[171].addListener("click", function() {gen_infowindow("2408","171")});
 platzmarker[186] = new google.maps.Marker({position: {lat: 48.41786573915844, lng: 13.127857446670532},map: map,icon: markerpic,title: ""});
 platzmarker[186].addListener("click", function() {gen_infowindow("2442","186")});
 platzmarker[191] = new google.maps.Marker({position: {lat: 48.43532, lng: 13.10916999999995},map: map,icon: markerpic,title: ""});
 platzmarker[191].addListener("click", function() {gen_infowindow("2454","191")});
 platzmarker[222] = new google.maps.Marker({position: {lat: 50.52742409496361, lng: 6.411595344543457},map: map,icon: markerpic,title: ""});
 platzmarker[222].addListener("click", function() {gen_infowindow("2533","222")});
 platzmarker[231] = new google.maps.Marker({position: {lat: 50.82448563183537, lng: 10.608915056622322},map: map,icon: markerpic,title: ""});
 platzmarker[231].addListener("click", function() {gen_infowindow("2565","231")});
 platzmarker[232] = new google.maps.Marker({position: {lat: 49.81202001879978, lng: 6.43137999999999},map: map,icon: markerpic,title: ""});
 platzmarker[232].addListener("click", function() {gen_infowindow("2566","232")});
 platzmarker[238] = new google.maps.Marker({position: {lat: 52.18664572046292, lng: 9.059702599999975},map: map,icon: markerpic,title: ""});
 platzmarker[238].addListener("click", function() {gen_infowindow("2575","238")});
 platzmarker[243] = new google.maps.Marker({position: {lat: 51.06777411965805, lng: 7.382460400000014},map: map,icon: markerpic,title: ""});
 platzmarker[243].addListener("click", function() {gen_infowindow("2580","243")});
 platzmarker[256] = new google.maps.Marker({position: {lat: 53.02413718767446, lng: 9.859425144982879},map: map,icon: markerpic,title: ""});
 platzmarker[256].addListener("click", function() {gen_infowindow("2636","256")});
 platzmarker[267] = new google.maps.Marker({position: {lat: 51.493863812043124, lng: 14.044783847885128},map: map,icon: markerpic,title: ""});
 platzmarker[267].addListener("click", function() {gen_infowindow("2855","267")});
 platzmarker[286] = new google.maps.Marker({position: {lat: 53.17387002120747, lng: 7.419060000000011},map: map,icon: markerpic,title: ""});
 platzmarker[286].addListener("click", function() {gen_infowindow("2983","286")});
}
function clearmarker() {
 for (i=0; i<platzmarker.length; i++) {
  if (platzmarker[i]) {
   platzmarker[i].setMap(null);
  }
 }
 platzmarker=new Array();
}
function gen_infowindow(campid,nr) {
 infowindow.setContent(campid);
 infowindow.open(map, platzmarker[nr]);
 var request = $.ajax({
  method: "GET",
  url: "platzinfo.html.php?c="+campid,
  dataType: "html"
 });

 request.done(function( msg ) {
   infowindow.setContent(msg);
   infowindow.open(map, platzmarker[nr]);  
 });
 
 request.fail(function( jqXHR, textStatus ) {
  alert( "Request failed: " + textStatus );
   infowindow.setContent("Fehler: "+textStatus);
   infowindow.open(map, platzmarker[nr]);
 }); 
 
}
//initMap()