function popup(img1) {
	if (img1=="") { exit(); };
	showHideLayers('ovrlay','','show');
	switchImage("metro", "../images/metro/" + img1 + ".png");
	if (document.layers) getMouseLoc;     //NS
  	else if (document.all) getMouseLoc(); //IE	
};

function switchImage(imgName, imgSrc) 
{
  if (document.images)
  {
    if (imgSrc != "none")
    {
      document.images[imgName].src = imgSrc;
    }
  }
}


// * Dependencies * 
// this function requires the following snippets:
// JavaScript/readable_MM_functions/findObj
// JavaScript/readable_MM_functions/showHideLayers
// JavaScript/events/getMouseLoc
// Example: obj = findObj("image1");
function findObj(theObj, theDoc)
{
  var p, i, foundObj;
  
  if(!theDoc) theDoc = document;
  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
  {
    theDoc = parent.frames[theObj.substring(p+1)].document;
    theObj = theObj.substring(0,p);
  }
  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
  for (i=0; !foundObj && i < theDoc.forms.length; i++) 
    foundObj = theDoc.forms[i][theObj];
  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++) 
    foundObj = findObj(theObj,theDoc.layers[i].document);
  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);
  
  return foundObj;
}
// * Dependencies * 
// this function requires the following snippets:
// JavaScript/readable_MM_functions/findObj
//
// Accepts a variable number of arguments, in triplets as follows:
// arg 1: simple name of a layer object, such as "Layer1"
// arg 2: ignored (for backward compatibility)
// arg 3: 'hide' or 'show'
// repeat...
//
// Example: showHideLayers(Layer1,'','show',Layer2,'','hide');
function showHideLayers()
{ 
  var i, visStr, obj, args = showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3)
  {
    if ((obj = findObj(args[i])) != null)
    {
      visStr = args[i+2];
      if (obj.style)
      {
        obj = obj.style;
        if(visStr == 'show') visStr = 'visible';
        else if(visStr == 'hide') visStr = 'hidden';
      }
      obj.visibility = visStr;
    }
  }
}

<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}

MM_reloadPage(true);

var popUpWin=0;
function popbus(id)
{
  //var url="congs.php";
  var width = 350;
  var height = screen.height/2 - 35;
  var top=height;
  var left=screen.width - width-20;
  var url = "http://www.oasa.gr/greek/routes/i_stops.asp?route_id=+" + id + "&rvariant_id=1&medium=0";
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(url, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

var popUpWin2=0;
function popmap(id)
{
  //var url="congs.php";
  var width = 350;
  var height = screen.height/2 - 65;
  var top=0;
  var left=screen.width - width-20;
  var url = "../common/map_loader.php?nmap=" + id;
  if(popUpWin2)
  {
    if(!popUpWin2.closed) popUpWin2.close();
  }
  popUpWin2 = open(url, 'popUpWin2', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}
function setStatusBar(msgStr) { self.status = msgStr; }

//-->