Step 3 : First of all we add a jQuery library to our project. The JavaScript code and the style sheet code is written in the header section. The following are the contents of the project:
 
- 
JavaScript Code 
- 
Style Sheet Code 
Code :
 
 <script type="text/javascript" src="jquery-1.7.2.min.js"></script>
    <!-- App4 references -->
    <link href="/css/default.css" rel="stylesheet" />
    <script src="/js/default.js"></script>
    <script type="text/javascript">
        $(function () {
            $('.dd').mouseenter(function () {
                $('.s_links').stop(false, true).hide();
                var chmenu = $(this).parent().next();
                chmenu.css({
                    position: 'absolute',
                    top: $(this).offset().top + $(this).height() + 'px',
                    left: $(this).offset().left + 'px',
                    zIndex: 1000
                });
                chmenu.stop().slideDown(500);
                chmenu.mouseleave(function () {
                    $(this).slideUp(500);
                });
            });
        });
     </script>
 
Step 4 : The complete code of this application is written below. It contains the code of the HTML file and the JavaScript file code.
 
Code :
 
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>App4</title>
 
    <!-- WinJS references -->
    <link href="//Microsoft.WinJS.1.0.RC/css/ui-dark.css" rel="stylesheet" />
    <script src="//Microsoft.WinJS.1.0.RC/js/base.js"></script>
    <script src="//Microsoft.WinJS.1.0.RC/js/ui.js"></script>
    <script type="text/javascript" src="jquery-1.7.2.min.js"></script>
    <!-- App4 references -->
    <link href="/css/default.css" rel="stylesheet" />
    <script src="/js/default.js"></script>
    <script type="text/javascript">
        $(function () {
            $('.dd').mouseenter(function () {
                $('.s_links').stop(false, true).hide();
                var chmenu = $(this).parent().next();
                chmenu.css({
                    position: 'absolute',
                    top: $(this).offset().top + $(this).height() + 'px',
                    left: $(this).offset().left + 'px',
                    zIndex: 1000
                });
                chmenu.stop().slideDown(500);
                chmenu.mouseleave(function () {
                    $(this).slideUp(500);
                });
            });
        });
     </script>
 
<style type="text/css">
ul
{
  list-style:none;
  padding:0px;
  margin:0px
}
ul li
{
  display:inline;
  float:left;
}
ul li a
{
  color:#ffffff;
  background:#990E00;
  margin-right:5px;
  font-weight:bold;
  font-size:20px;
  font-family:Comic Sans MS;
  text-decoration:none;
  display:block;
  width:210px;
  height:25px;
  line-height:25px;
  text-align:center;
  -webkit-border-radius:5px;
  -moz-border-radius:5px;
  border: 1px solid #560E00;
}
ul li a:hover
{
  color:#cccccc;
  background:#0026ff;
  font-weight:bold;
  text-decoration:none;
  display:block;
  width:210px;
  text-align:center;
  -webkit-border-radius:5px;
  -moz-border-radius:5px;
  border: 1px solid #000000;
}
ul li.s_links a 
{
  color: #000000;
  background: #ccff66;
  border-bottom: 1px solid #cccccc;
  font-weight: 100;
  text-decoration: none;
  display: block;
  width: 210px;
  text-align: center;
  margin-top: 2px;
}
ul li.s_links a:hover
{
  color:#000000;
  background:#ccff66;
  font-weight:100;
  text-decoration:none;
  display:block;
  width:200px;
  text-align:center;
}
ul li.s_links
{
  display:none;
}
#container
{
  margin:0px auto;
  width:800px;
}
.clear
{
  clear:both;
}
.left
{
  float:left;
}
.right
{
  float:right;
}
</style>
</head>
<body style="background-color:#ffffff">
       
<div id="container" style="margin-top:40px;">
   <ul>
      <li><a href="#" class="dd">Home</a></li>
         <li class="s_links">
            <a href="default5.aspx">About Us</a>
            <a href="default6.aspx">Testomonial</a>
             <a href="default6.aspx">History</a>
         </li>
   </ul>
   <ul>
       <li><a href="#" class="dd">Services</a></li>
          <li class="s_links">
            <a href="default7.aspx">Web Applications</a>
            <a href="default8.aspx">Windows Applications</a>
            <a href="default9.aspx">Metro Style</a>
            <a href="$">Windows Phone</a>
            <a href="$">iPhone</a>
          </li>
   </ul>
   <ul>
       <li><a href="#" class="dd">Professionals</a></li>
          <li class="s_links">
            <a href="default.aspx">Mobile Application</a>
            <a href="default4.aspx">.Net Courses</a>
            <a href="default2.aspx">Android Application</a>
            <a href="default3.aspx">iphone Development</a>
            <a href="#">Cloud Computing</a>
          </li>
   </ul>
</div>
  <br/>
</body>
</html>
 
Step 5 : After running this code the output looks like this:
![img3.gif]()
Enter the Mouse on Home title.
![img4.gif]()
Enter the Mouse on Professionals title.
![img5.gif]()