var color_standard = "rgb(0, 128, 192)";
var color_mouseover = "rgb(0, 148, 252)";
var color_selected = "rgb(0, 92, 135)";

var isGecko = document.getElementById && !document.all ? 1 : 0;

var address;
var prev;
var prevaddress = 'title';

function showmap(city)
{
   if (isGecko)
   {
      map = document.getElementById('map_' + city).style;
      link = document.getElementById('link_' + city).firstChild.style;

   } else
   {
      map = document.all['map_' + city].style;
      link = document.all[document.all['link_' + city].sourceIndex +1].style;
   }

   map.visibility = 'visible';

}

function hidemap(city)
{
   if (isGecko)
   {
      map = document.getElementById('map_' + city).style;
      link = document.getElementById('link_' + city).firstChild.style;

   } else
   {
      map = document.all['map_' + city].style;
      link = document.all[document.all['link_' + city].sourceIndex +1].style;
   }

   map.visibility = 'hidden';

}

function showaddress(city)
{
   if (isGecko)
   {
      address = document.getElementById('address_' + city).style;
      link = document.getElementById('link_' + city).firstChild.style;
      prev = document.getElementById('address_' + prevaddress).style;

   } else
   {
      address = document.all['address_' + city].style;
      link = document.all[document.all['link_' + city].sourceIndex +1].style;
      prev = document.all['address_' + prevaddress].style;
   }

   prev.display = 'none';
   address.display = '';

   if (prevaddress != "title")
   {
      plink = isGecko ? document.getElementById('link_' + prevaddress).firstChild.style : document.all[document.all['link_' + prevaddress].sourceIndex +1].style;

   }

   prevaddress = city;
}