title: 'System.SystemException' while webview.InvokeSript in windows phone
body: <p>I am using following code where i get this exception</p>
  
  <p>String title = (string)webBrowser.InvokeScript("eval", "document.getElementById('hdnTransactionId').value;");</p>
  
  <p>I use a WebBrowser control in a WP7 app and have set IsScriptEnabled to true. Then when trying to invoke a script via InvokeScript of the WebBrowser i get this exception.</p>