1. Drop down menu :
<!--Example drop down menu 1-->
<form name="form1">
  <select name="select1" size="1" style="background-color:#FFFFD7" onchange="displaydesc(document.form1.select1, thetext1, 'textcontainer1')">
  <option selected value="http://www.javascriptkit.com" />JavaScript Kit 
  <option value="http://freewarejava.com" />Freewarejava.com
  <option value="http://wired.com" target="newwin" />Wired News
  <option value="http://www.news.com" />News.com
  <option value="http://www.codingforums.com" target="newwin" />Coding Forums
  </select>
  <input type="button" value="Go" 
  onclick="jumptolink(document.form1.select1)" /><br />
  <span id="textcontainer1" align="left" style="font:italic 13px Arial">
  </span>
  </form>
<!--Example drop down menu 2-->
  <!--
  <form name="form2">
  <select name="select2" size="1" style="background-color:#E3FFDF" onchange="displaydesc(document.form2.select2, thetext2, 'textcontainer2')">
  <option selected value="http://www.cnn.com" />CNN
  <option value="http://www.msnbc.com" />MSNBC
  <option value="http://news.bbc.co.uk" />BBC News
  <option value="http://www.theregister.com/" />The Register
  </select>
  <input type="button" value="Go" 
  onclick="jumptolink(document.form2.select2)" /><br />
  <span id="textcontainer2" align="left" style="font:italic 13px Arial">
  </span>
  </form>
  -->
<!--IMPORTANT: Below script should always follow all of your HTML codes above, and never proceed them-->
  <!--To be safe, just add below script at the end of your page-->
<script type="text/javascript">
/***********************************************
  * Drop down menu w/ description- (c) Dynamic Drive (www.dynamicdrive.com)
  * This notice must stay intact for use
  * Visit http://www.dynamicdrive.com/ for full source code
  ***********************************************/
//1) CUSTOMIZE TEXT DESCRIPTIONS FOR LINKS ABOVE
  var thetext1=new Array()
  thetext1[0]="Comprehensive JavaScript tutorials and over 400+ free scripts"
  thetext1[1]="Direct link to hundreds of free Java applets online!"
  thetext1[2]="Up to date news on the technology front"
  thetext1[3]="News.com- The #1 technology News site."
  thetext1[4]="Web Coding and development forums"
/// You may define additional text arrays if you have multiple drop downs:
  var thetext2=new Array()
  thetext2[0]="CNN- US and World News."
  thetext2[1]="MSNBC- NBC News online."
  thetext2[2]="BBC News- Updated every minute of every day."
  thetext2[3]="TheRegister- Daily IT news."
// Now, see 2) below for final customization step
function displaydesc(which, descriptionarray, container){
  if (document.getElementById)
  document.getElementById(container).innerHTML=descriptionarray[which.selectedIndex]
  }
function jumptolink(what){
  var selectedopt=what.options[what.selectedIndex]
  if (document.getElementById && selectedopt.getAttribute("target")=="newwin")
  window.open(selectedopt.value)
  else
  window.location=selectedopt.value
  }
//2) Call function displaydesc() for each drop down menu you have on the page
  //   This function displays the initial description for the selected menu item
  //   displaydesc(name of select menu, name of corresponding text array, ID of SPAN container tag):
  //   Important: Remove the calls not in use (ie: 2nd line below if there's only 1 menu on your page)
displaydesc(document.form1.select1, thetext1, 'textcontainer1')
  displaydesc(document.form2.select2, thetext2, 'textcontainer2')
</script>
2. SwitchMenu :<style type="text/css">
  .menutitle{
  cursor:pointer;
  margin-bottom: 5px;
  background-color:#ECECFF;
  color:#000000;
  width:140px;
  padding:2px;
  text-align:center;
  font-weight:bold;
  /*/*/border:1px solid #000000;/* */
  }
.submenu{
  margin-bottom: 0.5em;
  }
  </style>
<script type="text/javascript">
/***********************************************
  * Switch Menu script- by Martial B of http://getElementById.com/
  * Modified by Dynamic Drive for format & NS4/IE4 compatibility
  * Visit http://www.dynamicdrive.com/ for full source code
  ***********************************************/
var persistmenu="yes" //"yes" or "no". Make sure each SPAN content contains an incrementing ID starting at 1 (id="sub1", id="sub2", etc)
  var persisttype="sitewide" //enter "sitewide" for menu to persist across site, "local" for this page only
if (document.getElementById){ //DynamicDrive.com change
  document.write('<style type="text/css">\n')
  document.write('.submenu{display: none;}\n')
  document.write('</style>\n')
  }
function SwitchMenu(obj){
  if(document.getElementById){
  var el = document.getElementById(obj);
  var ar = document.getElementById("masterdiv").getElementsByTagName("span"); //DynamicDrive.com change
  if(el.style.display != "block"){ //DynamicDrive.com change
  for (var i=0; i<ar.length; i++){
  if (ar[i].className=="submenu") //DynamicDrive.com change
  ar[i].style.display = "none";
  }
  el.style.display = "block";
  }else{
  el.style.display = "none";
  }
  }
  }
function get_cookie(Name) { 
  var search = Name + "="
  var returnvalue = "";
  if (document.cookie.length > 0) {
  offset = document.cookie.indexOf(search)
  if (offset != -1) { 
  offset += search.length
  end = document.cookie.indexOf(";", offset);
  if (end == -1) end = document.cookie.length;
  returnvalue=unescape(document.cookie.substring(offset, end))
  }
  }
  return returnvalue;
  }
function onloadfunction(){
  if (persistmenu=="yes"){
  var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
  var cookievalue=get_cookie(cookiename)
  if (cookievalue!="")
  document.getElementById(cookievalue).style.display="block"
  }
  }
function savemenustate(){
  var inc=1, blockid=""
  while (document.getElementById("sub"+inc)){
  if (document.getElementById("sub"+inc).style.display=="block"){
  blockid="sub"+inc
  break
  }
  inc++
  }
  var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
  var cookievalue=(persisttype=="sitewide")? blockid+";path=/" : blockid
  document.cookie=cookiename+"="+cookievalue
  }
if (window.addEventListener)
  window.addEventListener("load", onloadfunction, false)
  else if (window.attachEvent)
  window.attachEvent("onload", onloadfunction)
  else if (document.getElementById)
  window.onload=onloadfunction
if (persistmenu=="yes" && document.getElementById)
  window.onunload=savemenustate
</script>
<!-- Keep all menus within masterdiv-->
  <div id="masterdiv">
<div class="menutitle" onclick="SwitchMenu('sub1')">Link Web Excel</div>
  <span class="submenu" id="sub1">
  - <a href="https://sites.google.com/site/t13xc2/excel-1/cachamtutaochoworksheet">Các hàm Tự Tạo Trong Excel</a><br />
  - <a href="http://www.giaiphapexcel.com/">Giải Pháp Excel</a><br />
  - <a href="http://webketoan.com/forums/71-ung-dung-excel/">Ứng dụng Excel</a><br />
  - <a href="http://excel.webkynang.vn/">Học Excel</a><br />
- <a href="http://excelviet.com
  ">Excel Việt</a><br />
- <a href="http://tuhocexcel.blogspot.com
  ">Tự Học Excel</a><br />
- <a href="http://www.hocexcel.online">Học Excel Online</a><br />
</span>
<div class="menutitle" onclick="SwitchMenu('sub2')">Thủ Thuật Excel</div>
  <span class="submenu" id="sub2">
  - <a href="https://support.office.com/vi-vn/article/T%E1%BA%A1o-ho%E1%BA%B7c-x%C3%B3a-b%E1%BB%8F-%C4%91%E1%BB%8Bnh-d%E1%BA%A1ng-s%E1%BB%91-t%C3%B9y-ch%E1%BB%89nh-83657CA7-9DBE-4EE5-9C89-D8BF836E028E">Tạo hoặc xóa bỏ định dạng số tùy chỉnh</a><br />
  - <a href="http://quantrimang.com/cac-phuong-phap-giau-so-0-trong-excel-8250">Các phương pháp giấu số 0 trong Excel</a><br />
  - <a href="https://support.office.com/vi-vn/article/C%C3%A1c-h%C3%A0m-Excel-theo-th%E1%BB%83-lo%E1%BA%A1i-5F91F4E9-7B42-46D2-9BD1-63F26A86C0EB">Các hàm Excel (theo thể loại)</a><br/>
- <a href="http://caulacbovb.com/forum/viewtopic.php?t=10177">Hướng dẫn viết VBA Excel chạy trên ứng dụng VB6</a><br/>
- <a href="http://blogchiasekienthuc.com/hoc-office/hoc-excel/
  ">Học Excel - blogchiasekienthuc</a><br/>
- <a href="http://blogcongdong.com/tag/tu-hoc-excel-online">Học Excel - blogcongdong</a><br/>
</span>
<div class="menutitle" onclick="SwitchMenu('sub3')">Help Forum</div>
  <span class="submenu" id="sub3">
  - <a href="http://www.codingforums.com">Coding Forums</a><br />
  </span>
  
  <div class="menutitle" onclick="SwitchMenu('sub4')">Trang Web Hỗ Trợ Blog</div>
  <span class="submenu" id="sub4">
- <a href="http://www.makingdifferent.com/category/blogger-widgets/
  ">Blogger Widgets</a><br />
- <a href="http://blog.hubspot.com/marketing/blog-sidebar-plugins-widgets-add-ons-list">13 Widgets, Plugins, and Add-Ons to Enhance Your Blog's Performance</a><br />
- <a href="http://mashable.com/2007/09/06/widgets-2/#oP9qFO7s4Zq3">50 Widget cho blog</a><br />
- <a href="http://4site.vn
  ">4site.vn</a><br />
- <a href="http://feedjit.com
  ">feedjit.com
  </a><br />
<!--
- <a href="http://www.javascriptkit.com">JavaScript Kit</a><br />
  - <a href="http://www.freewarejava.com">Freewarejava</a><br />
  - <a href="http://www.cooltext.com">Cool Text</a><br />
  - <a href="http://www.google.com">Google.com</a>
  -->
</span>
<img src="http://www.b-lốc.vn/favicon.ico" onclick="SwitchMenu('sub5')" />
<font size="2" color="green"><-Xem Blogger & Bài Viết Click vào biểu Tượng</font>
<br /> 
  <span class="submenu" id="sub5">
  - <a href="http://www.terocket.com">Trang Blog Terocket</a><br />
- <a href="http://www.24hnews.top">Trang Blog 24hnews</a><br />
- <a href="http://www.tips24h.net">Trang Blog tips24h</a><br />
- <a href="http://nguyencaotu.com">Trang Blog nguyencaotu</a><br />
- <a href="http://www.tohaitrieu.net">Trang Blog tohaitrieu</a><br />
- <a href="http://noct-land.blogspot.com
  ">Trang Blog noct-land</a><br />
- <a href="http://www.dxoan.com
">Trang Blog dxoan</a><br />
  - <a href="http://www.tranbadat.info">Trang Blog tranbadat</a><br />
- <a href="http://minhtamblog.com">Trang Blog minhtam</a><br />
- <a href="http://canthoit.info
  ">Trang Blog canthoit.info
  </a><br />
- <a href="http://www.thanhf.com">Trang Blog thanhf.com
</a><br />
<!-- google -->
- <a href="http://www.khoahocseo.vn/2015/06/cach-xoa-credit-link-trong-template-blogger.html">Cách Xóa Credit Link Trong Template Blogger
  </a><br />
  - <a href="http://www.tips24h.net/2014/12/cac-the-dieu-kien-trong-blogspot.html">Thẻ điều kiện trong blogspot</a><br />
- <a href="http://www.terocket.com/2013/01/edit-blogger-mobile-templates-for.html">Tùy chỉnh Blogger Templates khi xem bằng Mobile
  </a><br />
- <a href="http://www.24hnews.top/2015/06/thu-gon-bai-viet-tren-trang-chu.html">Thu gọn bài viết trên trang chủ<br />
- <a href="http://www.terocket.com/2011/02/cach-chia-module-blog-lam-nhieu-cot.html">Chia tiện ích trong blogspot thành nhiều cột</a><br />
- <a href="http://thuthuat.congnghehomnay.com/huong-dan-thiet-ke-template-blogger-hoan-chinh/">Hướng dẫn thiết kế template Blogger hoàn chỉnh
  </a><br />
  - <a href="http://nguyencaotu.com/the-dieu-kien-if-trong-blogspot.html">Thẻ điều kiện IF trong Blogspot
  </a><br />
  
  - <a href="http://thaimeo.net/cai-dat-nang-cao-blogger">Cài đặt nâng cao Blogger
  </a><br />
- <a href="http://www.kenhchiase.biz/2015/09/tuy-chinh-hien-thi-noi-dung-voi-cau-dieu-kien-blogspot.html">Tùy chỉnh hiển thị với câu lệnh đều kiện trong Blogspot 
</a><br />
- <a href="http://www.tohaitrieu.net/an-hien-widgets-gadgets-tai-mot-trang-bat-ki-trong-blogspot/">Ẩn/Hiện Widgets/Gadgets tại một trang bất kì trong blogspot
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</a><br />
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</a><br />
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</a><br />
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