var xmlhttp

function addcomment()
{

	xmlhttp=GetXmlHttpObject();
	
	if (xmlhttp==null)
	  {
	  alert ("Your browser does not support XMLHTTP!");
	  return;
	  }
	  
	  
	var xname= document.comments.x_name.value;
	var xmess= document.comments.x_message.value;
	
	var url="submit_comments.php";
	url=url+"?xx="+xname+"&xm="+xmess;
	url=url+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateComments;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateComments()
{
if (xmlhttp.readyState==4)
  {
 	 document.getElementById("txtcomments").innerHTML=xmlhttp.responseText;
 	 document.comments.x_name.value='';
  	 document.comments.x_message.value='';
  }
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}