vImage = new Image(290,210);
vImage.src = '../0_images/world_map.gif';

vImageNyc = new Image(290,210);
vImageMxc = new Image(290,210);         
vImageShg = new Image(290,210); 
vImageLnd = new Image(290,210);
vImageBer = new Image(290,210);
vImageJhb = new Image(290,210);

vImageNyc.src = '../0_images/map_nyc.gif';         
vImageMxc.src = '../0_images/map_mxc.gif';
vImageShg.src = '../0_images/map_shg.gif';
vImageLnd.src = '../0_images/map_lnd.gif';
vImageBer.src = '../0_images/map_ber.gif';
vImageJhb.src = '../0_images/map_jhb.gif';

var LastElement = null;

function normal() {
   vWorldMap = window.document.images['worldMap'];
   vWorldMap.src = vImage.src;            

   if (LastElement) {           
      vCityTag  = document.getElementById(LastElement.id.slice(4,7));
      //alert(vCityTag.style.backgroundImage);
      vCityTag.className = "city";
   }
}

function highlight(element) {
   vWorldMap = window.document.images['worldMap'];
   
   vCityTag  = document.getElementById(element.id.slice(4,7));

   vCityTag.className = "citySelected";
   vCityTag.id = element.id.slice(4,7);
   
   switch(element.id) {
      case 'map_nyc':
         vWorldMap.src = vImageNyc.src;
         break;
      case 'map_mxc':
         vWorldMap.src = vImageMxc.src;
         break;
      case 'map_shg':
         vWorldMap.src = vImageShg.src;
         break;
      case 'map_lnd':
         vWorldMap.src = vImageLnd.src;
         break;
      case 'map_ber':
         vWorldMap.src = vImageBer.src;
         break;
      case 'map_jhb':
         vWorldMap.src = vImageJhb.src;
         break;
   }

   
   LastElement = element;
}