var req;

function loadXMLDoc(url,vars)
{
//  native XMLHttpRequest
 if  (window.XMLHttpRequest) {
	req =  new  XMLHttpRequest();
	req.onreadystatechange = processReqChange;
	req.open("POST", url, true);
	req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

	req.send(vars);
//  IE/Windows ActiveX version
}  else   if  (window.ActiveXObject) {
	req =  new  ActiveXObject("Microsoft.XMLHTTP");
	 if  (req) {
		req.onreadystatechange = processReqChange;
		req.open("POST", url, true);
		req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		//alert(vars);
		req.send(vars);
	}
}
}



function processReqChange() 
{
    // only if req shows "complete"
     if  (req.readyState ==  4 ) {
        // only if "OK"
         if  (req.status ==  200 ) {
            // ...processing statements go here...
			response = req.responseXML.documentElement;

("Text",req.responseText);
			method = response.getElementsByTagName('method')[ 0 ].firstChild.data;
			user = response.getElementsByTagName('user')[ 0 ].firstChild.data;
			time = response.getElementsByTagName('time')[ 0 ].firstChild.data;
			result = response.getElementsByTagName('content')[ 0 ].firstChild.data;
      		eval(method + '(\'\',user,time,result,)');
        }  else  {
            alert("There was a problem retrieving the XML data:\n" + req.statusText);
        }
    }
}

    url  = 'chat.php';
   vars = 'id=' +id;
    loadXMLDoc(url,vars);

function get_thumbs(keyw,response)
{
table = document.getElementById('conteiner'); 
   if  (response != '')
  { 
        //обработка
   }
   else 
  {
        //вызов
    }
}