var xmlHttp

function GetArticleComments(articleid)
{ 
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	var url="/articlecomments/listcomments.asp";
	
	url=url+"?id="+articleid;
	//get selected item
	url=url+"&sid="+Math.random();

	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

}

function stateChanged() 
{ 
	if (xmlHttp.readyState==4)
	{ 
		if(xmlHttp.status==200)
		{
			var response = xmlHttp.responseText;
			document.getElementById("commentsarea").innerHTML=response;
			document.getElementById("commentsarea").setfocus;
		} else {
			alert("A problem occurred with communicating between "+
				  "the XMLHttpRequest object and the server program.");
		}
	}
}

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;
}