function survey(fieldname, chosen){
xmlhttp=null;
if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
}else{// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
  var url = "/survey.php";
	var params = fieldname + "=" + chosen;
	xmlhttp.open("POST", url, true);
	
	//Send the proper header information along with the request
	xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlhttp.setRequestHeader("Content-length", params.length);
	xmlhttp.setRequestHeader("Connection", "close");
	
	xmlhttp.onreadystatechange = function() {//Call a function when the state changes.
		if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
			document.getElementById('survey').innerHTML=xmlhttp.responseText;
		}
	}
	xmlhttp.send(params);
}