<!-- Place in <head></head> tags --> <script type="text/javascript"> <!-- function toggle_div(id) { var diq = document.getElementById(id).style; diq.display=(diq.display=="none") ? "" : "none"; } //--> </script> <!-- Example usage --> <a href="javascript:toggle_div('hideshow')">Hide/show</a> <div id="hideshow"> <h1>Example</h1> </div>