title: jquery how to hide div on click a link
body: <pre><code>$('#banner').click(function show_stuff() {
  var s = document.getElementById("dropdown_c");
  s.style.height = "200px";
  s.style.border = "1px solid #e9eaee";
  });
  </code></pre>
  
  <p>when banner is clicked dropdown_c div is showed</p>
  
  <p>how to hide dropdown_c when clicking banner again</p>
  
  <p>here is my code only to show the div not to hide</p>
  
  <p>i want to allow user to show/hide this div on clicking banner</p>