Try This Editor

Source Code:

<!DOCTYPE html>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<script src="../../../ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<style type="text/css"> 
#slidePanel,#main
{
padding:5px;
text-align:center;
background-color: #E9E9E9;
border: solid 1px #B6B6B6;
}
#slidePanel
{
padding:100px;
display:none;
}
</style>
<script> 
$(document).ready(function(){
  $("#main").click(function(){
    $("#slidePanel").slideDown("fast");
  });
});
</script>
</head>
<body>
<div id="main">Click Me to Slide Down</div>
<div id="slidePanel">Welcome to jQuery</div>
</body>
</html>

Output Preview :

www.c4learn.com/tutorials/ - Try it yourself