var img1_on =new Image();
var img1_off =new Image();
var img2_on =new Image();
var img2_off =new Image();
var img3_on =new Image();
var img3_off =new Image();
var map1 =new Image();
var map2 =new Image();
var map3 =new Image();

img1_on.src ="image/map_button01_on.gif";
img1_off.src ="image/map_button01_off.gif";
img2_on.src ="image/map_button02_on.gif";
img2_off.src ="image/map_button02_off.gif";
img3_on.src ="image/map_button03_on.gif";
img3_off.src ="image/map_button03_off.gif";
map1.src ="image/map_a.gif";
map2.src ="image/map_b.gif";
map3.src ="image/map_c.gif";

function changeImage1() {
  document.map1.src = img1_on.src;
  document.map2.src = img2_off.src;
  document.map3.src = img3_off.src; 
  document.getElementById("taxiarea").style.display="block";
  document.getElementById("map").style.display="none";
  document.getElementById("maps").style.display="none";
}

function changeImage2() {
  document.map1.src = img1_off.src;
  document.map2.src = img2_on.src;
  document.map3.src = img3_off.src;  
  document.getElementById("taxiarea").style.display="none";
  document.getElementById("map").style.display="block";
  document.getElementById("maps").style.display="none";
  
 if (GBrowserIsCompatible()) {
      var map = new GMap2(document.getElementById("map"));

      var point = new GLatLng(33.54697451132706, 130.36312580108642);
      map.setCenter(point, 14);
	  map.disableDragging();

      var imageUrl = "http://www.nanbutaxi.jp/image/map_line01.png";
      var screenXY = new GScreenPoint(0, 0);
      var overlayXY = new GScreenPoint(0, 0);
      var sz = new GScreenSize(534, 534);

      var overlay = new GScreenOverlay(imageUrl, screenXY, overlayXY, sz);

      map.addOverlay(overlay);

    }  
  
  
}

function changeImage3() {
  document.map1.src = img1_off.src;
  document.map2.src = img2_off.src;
  document.map3.src = img3_on.src;  
  document.getElementById("taxiarea").style.display="none";
  document.getElementById("map").style.display="none";
  document.getElementById("maps").style.display="block";
  
 if (GBrowserIsCompatible()) {
      var map = new GMap2(document.getElementById("maps"));

      var point = new GLatLng(33.54697451132706, 130.36312580108642);
      map.setCenter(point, 14);
	  map.disableDragging();

      var imageUrl = "http://www.nanbutaxi.jp/image/map_line02.png";
      var screenXY = new GScreenPoint(0, 0);
      var overlayXY = new GScreenPoint(0, 0);
      var sz = new GScreenSize(534, 534);

      var overlay = new GScreenOverlay(imageUrl, screenXY, overlayXY, sz);

      map.addOverlay(overlay);

    }  
  
}