function filterclients(getIdType,i)
{
var xmlHttp;
try
  {  
  // Firefox, Opera 8.0+, Safari  
  xmlHttp=new XMLHttpRequest();  
  }
catch (e)
  {  
  // Internet Explorer  
  try
    {    
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");   
	 }
  catch (e)
    {    
	try
      {      
	  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
	  }
    catch (e)
      {      
	  	alert("Your browser does not support AJAX!");      
		return false;      
		}    
		}  
		}
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
	  document.getElementById('clientList').innerHTML = xmlHttp.responseText;
      }
    }
	if(getIdType == "select")
		{
		frm=document.forms[0];
		var pdt_id=frm.elements['fieldPDT_ID'].value;
		}else{
		var pdt_id=i;
		}
	url="clientfilter.cfm?PDT_ID="+pdt_id;
  	xmlHttp.open("GET",url,true);
  	xmlHttp.send(null); 
	document.getElementById('clientList').style.visibility='visible';
	document.getElementById('listFilteredBy').innerHTML=pdt_name[pdt_id];
}