window.onload = function()
{
	ajaxFunction("current");
}

function ajaxFunction(buttonID)
{
var xmlHttp;
try
{
  // Firefox, Opera 8.0+, Safari  
  xmlHttp=new XMLHttpRequest();
}
catch (e)
  {
  // Internet Explorer  
  try
    {    
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
catch (e)
 {    
  try
    {      
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
    }
  catch (e)
    {      
    alert("Your browser does not support AJAX!");
    return false;      
    }    
 }  
}
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
      document.getElementById("main").innerHTML = xmlHttp.responseText;
      }
    }
  xmlHttp.open("GET",buttonID+".txt",true);
  xmlHttp.send(null);  
}

function archivesPost(buttonID)
{
var xmlHttp;
try
{
  // Firefox, Opera 8.0+, Safari  
  xmlHttp=new XMLHttpRequest();
}
catch (e)
  {
  // Internet Explorer  
  try
    {    
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
catch (e)
 {    
  try
    {      
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
    }
  catch (e)
    {      
    alert("Your browser does not support AJAX!");
    return false;      
    }    
 }  
}
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
      document.getElementById("main").innerHTML = xmlHttp.responseText;
      }
    }
  xmlHttp.open("GET","./archives/" + buttonID ,true);
  xmlHttp.send(null);  
}

function reverse(image){
  var address = (image.src);
  address = address.replace(/obverse/,"reverse");
  image.src = address;
}

function obverse(image){
  var address = (image.src);
  address = address.replace(/reverse/,"obverse");
  image.src = address;
}