var res = "";
var sf = "psychology";
function on_loaded1(oj){
	var res = decodeURIComponent(oj.responseText);
	document.getElementById('res').innerHTML = res;
}
function send_req(){
	sendRequest(on_loaded1,'&cat='+sf,'POST','/cgi-bin/ranking/echo.cgi',true,true);
}
send_req();