Untitled

<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script>

function showmarker1(){
  var lon=5.9256706237794035;
  var lat=52.05545039996706;
  for(i=0;i<5;i++){
    lat+=0.01;
    Addmarker1Marker('aa',lon,lat);
    sleep(1000);
  }
}


function sleep(millis){
  var date = new Date();
  var curDate = null;
  do { curDate = new Date(); }
  while(curDate-date < millis);
}

function Addmarker1Marker(marker1ID, lon,lat) {
  var lonlat = new OpenLayers.LonLat(lon,lat).transform(
  new OpenLayers.Projection("EPSG:4326"),
  map.getProjectionObject());
  alert(lonlat);
  var marker = new OpenLayers.Marker(lonlat);
  marker.marker1ID = marker1ID;
  arrMarkers.push(marker);
  markers.addMarker(marker);
}

function initialize() {
  arrMarkers = [];
  markers='';
  map = new OpenLayers.Map("map-canvas");
  map.addLayer(new OpenLayers.Layer.OSM());
  focusPoint = new OpenLayers.LonLat(5.92567, 52.055450)
  focusPoint.transform(new OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
  map.setCenter(focusPoint, 9);

  markers = new OpenLayers.Layer.Markers("Markers");
  map.addLayer(markers);
}

function removemarker1(id) {
  Removemarker1Marker(id);
}
</script>

<body onload="initialize();">
  <div id="map-canvas"></div>
  <button type="button" onclick="showmarker1()">Show marker1</button>
</body>