title: visual studio Microsoft JScript runtime error: 'Sys' is undefined error
body: <p>my visual studio automatically inserts this </p>
  
  <pre><code>&lt;script type='text/javascript'&gt;new Sys.WebForms.Menu({ element: 'NavigationMenu', disappearAfter: 500, orientation: 'horizontal', tabIndex: 0, disabled: false });&lt;/script&gt;&lt;/form&gt;
  </code></pre>
  
  <p>code on debugging (it is a default.aspx with default masterpage), which seems to cause the error message with the content </p>
  
  <blockquote>
    <p>Microsoft JScript runtime error: 'Sys' is undefined</p>
  </blockquote>
  
  <p>to appear any time I debug a project. </p>
  
  <p>Does anyone know how to solve this visual studio problem? I am not using ajax. It is just default. </p>
  
  <p>Also breakpoints are not hit!!!</p>