browserName=navigator.appName; 
browserVer=parseInt(navigator.appVersion);
  if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4))    
  version="n3";
  else
    version="n2";
  if (version=="n3")
   {
     
	col1pan = new Image (165,104);
	col1pan.src = "images/roadmap/road_brough.gif";
	
	col2pan = new Image (165,104);
	col2pan.src = "images/roadmap/road_lodge.gif";
	
	col3pan = new Image (165,104);
	col3pan.src = "images/roadmap/road_wood.gif";
	
	col4pan = new Image (165,104);
	col4pan.src = "images/roadmap/road_martin.gif";
	
	col5pan = new Image (165,104);
	col5pan.src = "images/roadmap/road_windsor.gif";
	     
  }

function colon(imgName)
 {
   if (version=="n3")
    {
      	imgPan=eval(imgName +"pan.src");
	document.pan.src= imgPan;
      					}
 }
function coloff(imgName)
 {
   if (version=="n3")
    {
      	document.pan.src="images/roadmap/roadblank.gif";
    }
 }