// start program from here when browser open
window.addEventListener("load",function(){
 ...
 // browser gui 
 init();
 load_back();
 load_go_animation_by();
 opening_draw();

 // connect agent name server
 nws = new WebSocket(ns_address);
 nws.onopen =function(){

 // get homepage member from agent name server
 nws.send("(ask sender:"+place_name

 // get message from name server
 nws.onmessage =function(event){                                       
  if(message.search("regist")>0){
  if(message.search("appear")>0){
  if(message.search("delete")>0){
  if(message.search("sleep")>0){
  if(message.search("homepage_member")>0){
                                                                    
 nws.onclose =function(event){
 ...
},false);