var LastElement = null;

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);
      
   LastElement = element;
}

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