var xmlhttp;
function showHierarchy(str)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
  	{
	  alert ("Browser does not support HTTP Request");
	  return;
  	}
	if (str == "table")
	{
		var url="member-hierarchy-table.php";
	} 
	else if (str == "list")
	{
		var url="member-hierarchy-list.php";
	}
	else
	{
		var url="blank.php";
	}
	//url=url+"?q="+str;
	//url=url+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}
function stateChanged()
{
	if (xmlhttp.readyState==4)
	{
		document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
	}
}
function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
  	{	
  		return new XMLHttpRequest();
 	 }
	if (window.ActiveXObject)
  	{
	  return new ActiveXObject("Microsoft.XMLHTTP");
  	}
	return null;
}