var xmlHttp

function showDownloads(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ('Your browser does not support AJAX!');
  return;
  } 
var url='getdownloads.asp';
url+='?sid='+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open('GET',url,true);
xmlHttp.send(null);
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
document.getElementById('downloads_chart').innerHTML=xmlHttp.responseText;
}
else
{
document.getElementById('downloads_chart').innerHTML='<center><img src="/img/icon_loading.gif" border="0" alt="Loading..."></center>';
}
}

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;
}