Enhance log display behavior and menu state management

ts/menu_ts.ts

@@ -871,8 +871,27 @@ function setActiveMenu(menuID:string) {
   }
 
   var activeItem = document.getElementById(ACTIVE_MENU_ID)
+  var activeMenuKey:string = ""
   if (activeItem != null) {
     activeItem.classList.add("menu-active")
+    var menuKeyValue = activeItem.getAttribute("data-menu")
+    if (menuKeyValue != null) {
+      activeMenuKey = menuKeyValue
+    }
+  }
+
+  if (document.body != null) {
+    if (activeMenuKey.length > 0) {
+      document.body.setAttribute("data-active-menu", activeMenuKey)
+    } else {
+      document.body.removeAttribute("data-active-menu")
+    }
+
+    if (activeMenuKey == "log") {
+      document.body.classList.add("menu-log-focus")
+    } else {
+      document.body.classList.remove("menu-log-focus")
+    }
   }
 }
 
@@ -983,6 +1002,9 @@ function PageReady() {
   }, true);
 
   setInterval(function(){ 
+    if (document.hidden == true) {
+      return
+    }
     updateLog()
   }, 10000);