var xmlhttp

function loadXMLDoc(url,posid)
{
// code for Mozilla, etc.
if (window.XMLHttpRequest)
  {
  xmlhttp=new XMLHttpRequest()
  xmlhttp.onreadystatechange=function(){if (xmlhttp.readyState==4){if (xmlhttp.status==200){document.getElementById(posid).innerHTML=xmlhttp.responseText;}}}
  xmlhttp.open("GET",url,true)
  xmlhttp.send(null)
  }
// code for IE
else if (window.ActiveXObject)
  {
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
    if (xmlhttp)
    {
    xmlhttp.onreadystatechange=function(){if (xmlhttp.readyState==4){if (xmlhttp.status==200){document.getElementById(posid).innerHTML=xmlhttp.responseText;}}}
    xmlhttp.open("GET",url,true)
	  xmlhttp.setRequestHeader('If-Modified-Since','Wed, 15 Nov 1995 04:58:08 GMT')
    xmlhttp.send()
    }
  }
}