function feedback() {

 var name= document.getElementById("username").value;
 var  text=	 document.getElementById("msgbody").value;
var mailname=	document.getElementById("useremail").value;





	var req = new JsHttpRequest();
	req.onreadystatechange = function() {
		if (req.readyState == 4) {


			  document.getElementById('error1').innerHTML = req.responseJS.error;
			 	if(req.responseJS.error1==1)
			  {
			  		document.getElementById("username").value="";
					document.getElementById("msgbody").value="";
					document.getElementById("useremail").value="";
			  	}
		}

	}

	req.open('POST', '../ajax/feedback.php', true);
	req.send({name: name,text:text, mail:mailname});

}