var ie = document.all ? 1 : 0;
var ns = document.layers ? 1 : 0;
var mac = ((navigator.appVersion.indexOf("Mac") != -1)) ? 1 : 0;
var pc = ((navigator.appVersion.indexOf("Mac") == -1)) ? 1 : 0;

function newImage(arg)
  {
  if (document.images)
    {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
    }
  }

function changeImages()
  {
  if (document.images && (preloadFlag == true))
    {
    for (var i=0; i<changeImages.arguments.length; i+=2)
      {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1]).src;
      }
    }
  }

function openNewWin(theURL,winName,features) 
  {
  window.open(theURL,winName,features);
  }

var preloadFlag = false;

  if (document.images)
    {
    // preload navigation button images
    homeSt = newImage("images/index_r3_c03.gif");
    homeOv = newImage("images/index_r3_c03_f2.gif");
    tourismSt = newImage("images/index_r3_c05.gif");
    tourismOv = newImage("images/index_r3_c05_f2.gif");
    placesSt = newImage("images/index_r3_c06.gif");
    placesOv = newImage("images/index_r3_c06_f2.gif");
    outSt = newImage("images/index_r3_c07.gif");
    outOv = newImage("images/index_r3_c07_f2.gif");
    servicesSt = newImage("images/index_r3_c08.gif");
    servicesOv = newImage("images/index_r3_c08_f2.gif");
    infoSt = newImage("images/index_r3_c09.gif");
    infoOv = newImage("images/index_r3_c09_f2.gif");

    expSt = newImage("images/pages_bottom_r1_c1.gif");
    expbackOv = newImage("images/pages_bottom_r1_c1_f2.gif");
    expgoupOv = newImage("images/pages_bottom_r1_c1_f3.gif");
    expdirOv = newImage("images/pages_bottom_r1_c1_f4.gif");
    backSt = newImage("images/pages_bottom_r1_c2.gif");
    backOv = newImage("images/pages_bottom_r1_c2_f2.gif");
    goupSt = newImage("images/pages_bottom_r1_c3.gif");
    goupOv = newImage("images/pages_bottom_r1_c3_f2.gif");
    dirSt = newImage("images/pages_bottom_r1_c4.gif");
    dirOv = newImage("images/pages_bottom_r1_c4_f2.gif");
    preloadFlag = true;
    }