var xmlhttp;
function loadXMLDoc(url)
{
document.getElementById('body_text').innerHTML = '<div class="column_left"><div class="blue_head"></div><div class="blue_text_loading"></div><div class="blue_foot"></div></div><div class="column_center"><div style="margin-top: 25%; text-align: center;"><img src="http://www.estorm.com.au/images/loader.gif" alt="Loading" /></div></div>'; 
	
xmlhttp=null;
if (window.XMLHttpRequest)
  {// code for Firefox, Opera, IE7, etc.
  xmlhttp=new XMLHttpRequest();
  }
else if (window.ActiveXObject)
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
if (xmlhttp!=null)
  {
  xmlhttp.onreadystatechange=state_Change;
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);
  }
else
  {
  alert("Your browser does not support XMLHTTP.");
  }
}

function state_Change()
{
if (xmlhttp.readyState==4)
  {// 4 = "loaded"
  if (xmlhttp.status==200)
    {// 200 = "OK"
    window.setTimeout("document.getElementById('body_text').innerHTML=xmlhttp.responseText", 10);
    }
  else
    {
    alert("Problem retrieving data:" + xmlhttp.statusText);
    }
  }
}