diff --git a/jstrr.js b/jstrr.js
index 2f28a14..9b5682e 100644
--- a/jstrr.js
+++ b/jstrr.js
@@ -518,8 +518,6 @@
 		}, 1000);
 	    }
 	} else if (data.scoreinfo) {
-	    //console.log("DSSSS="+JSON.stringify(data.scoreinfo));
-	    //console.log("STRI="+JSON.stringify(data.scoreinfo.steptrial));
 	    mystate.scoreinfo = data.scoreinfo;
 	    updateScoreField();
 	} else if (data.ranking) {
@@ -528,6 +526,12 @@
 	} else if (data.yourtext) {
 	    console.log("YT="+data.yourtext);
 	    loadTextToElement1(data.yourtext);
+	} else if (data.css) {
+	    let csslink = document.createElement("link");
+	    csslink.setAttribute("rel", "stylesheet");
+	    csslink.setAttribute("href", data.css);
+	    console.log(csslink);
+	    document.querySelector("head").appendChild(csslink);
 	} else {
 	    console.log("message: "+data.message);
 	}
diff --git a/jtserv/jtserv.rb b/jtserv/jtserv.rb
index bf33d29..6ff0013 100755
--- a/jtserv/jtserv.rb
+++ b/jtserv/jtserv.rb
@@ -5,8 +5,10 @@
 require 'csv'
 require 'sqlite3'
 
-PORT	= (ENV["JTSV_PORT"]||8814).to_i
-WARNMAX	= 3
+PORT		= (ENV["JTSV_PORT"]||8814).to_i
+WARNMAX		= 3
+LOCALCSS	= ENV["JTSV_LOCALCSS"]||"local.css"
+TIMEOUT		= (ENV["JTSV_TIMEOUT"]||60*5).to_i
 
 # Interchange of Information is done in JSON form.
 # (IN)	{"cmd": Command, OtherArgs...}
@@ -439,8 +441,19 @@
     end
   }
   ws_conn.onopen do
-    connections[ws_conn] = {}
+    # First, clean up idling connections
+    connections.each do |conn, info|
+      if TIMEOUT < Time.now - (info["stamp"]||info["openat"])
+        STDERR.printf("Force Close client %s after long idle\n", conn)
+        conn.close
+      end
+    end
+    # Start to accept a new client
+    connections[ws_conn] = {"openat": Time.now}
     ws_conn.send(JSON.generate({myid: connections.length}))
+    if test(?e, File.expand_path("..", LOCALCSS))
+      ws_conn.send(JSON.generate({css: LOCALCSS}))
+    end
     STDERR.printf("OP: %d clients [%s]\n",
                   connections.length,
                   connections.values.collect{|c| c["user"]}.join(", "))
@@ -449,16 +462,20 @@
     connections.delete(ws_conn)
     STDERR.printf("CL: %d clients\n", connections.length)
   end
+  ##
+  ## Main Loop
+  ##
   ws_conn.onmessage do |msg|
     begin
       json = JSON.parse(msg)
     rescue
-      return
+      next			## Skip client that sends invalid JSON
     end
     userinfo = connections[ws_conn]
     user, skey = userinfo['user'], userinfo['skey']
     STDERR.printf("RECV%s: [%s]\n", user ? "("+user+")" : "",
                   json.reject{|k,v|k=="Passcode"}.to_json)
+    userinfo["stamp"] = Time.now	# Remember time stamp
     if skey then
       userinfo["trial"] = 0		# Reset auth count
       if json["team"] then