var xmlHttp

function getPreviousPhotos(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="GetLatestPhotos.asp";
url=url+"?pid="+str;
url=url+"&next=false";
xmlHttp.onreadystatechange=state1Changed;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function getNextPhotos(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="GetLatestPhotos.asp";
url=url+"?pid="+str;
url=url+"&next=true";
xmlHttp.onreadystatechange=state1Changed;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function state1Changed() 
{ 
if (xmlHttp.readyState==4)
{ 
    document.getElementById("divLatestPhotos").innerHTML= "<img src='Images/AJAX_loading.gif' width='75px' height='75px' />"
    timer = setTimeout('show1Result()', 1000);
}
}

function show1Result()
{
    document.getElementById("divLatestPhotos").innerHTML=xmlHttp.responseText;
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}