title: asp image button refreshes page
body: <p>Hi My web page has lots of imageButtons, which refresh the page on click. How do I prevent this?</p>
  
  <pre><code> var imageButton = new ImageButton();
      imageButton.ImageUrl = "Styles/unClicked.png";
      imageButton.ID = "btn" + questionName;
       imageButton.OnClientClick = ("javascript:button_pressed()");
  </code></pre>