function initmap_20100118() {
  var myOptions = {
    zoom: 10,
    center: new google.maps.LatLng(35.052203,136.755753),
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  var map = new google.maps.Map(document.getElementById("map_20100118"), myOptions);

  var circuitImage = 'http://rentalkart-mania.com/images/gmapico_karting.png';
  var circuitLatLng = new google.maps.LatLng(35.058026,136.893028);
  var circuitMarker = new google.maps.Marker({
      position: circuitLatLng,
      map: map,
      icon: circuitImage
  });

  var constructImage = 'http://rentalkart-mania.com/images/gmapico_construct.png';
  var constructLatLng = new google.maps.LatLng(35.048962,136.616428);
  var constructMarker = new google.maps.Marker({
      position: constructLatLng,
      map: map,
      icon: constructImage
  });
}

var old_20100118 = window.onload;
window.onload = (typeof old_20100118 != 'function') ? function(e) {initmap_20100118();} : function(e) { old_20100118(e); initmap_20100118();};