Create a Warning message box in APM policy before Logon Page

I looked at this again and I have it where when you click "Logon" then you get a javascript popup that asks "Do you Accept the Terms?" and then depending on if you click OK or Cancel you either get the form submitted or the form doesn't submit.

You can take the function below and replace it in your logon.inc in the advanced customization section for your policy. Modify the "confirm" and "alert" boxes as needed. This is from an 11.6.0 HF-5 box.

function masterSubmit(form)
{
  if(confirm('Do you Accept the Terms?')) {
    alert('You are very brave!');


    if( !verifyNewPassword() /* || ... */){
        return false;
    }

    OnSubmit(); // this required by edge

    if (globalRestartOnSubmit) {
        try {
            window.external.WebLogonAutoLogon = (("" != globalInputs[0].value) && ("" != globalInputs[1].value));
        }
        catch (e) {}
        // restart session
        window.external.WebLogonResetSession();
        return false;
    }

    disableSubmit(form);
    return true;
  } else {
    alert('A wise decision!');
    return false;
  }
}

Let me know if this will work for you or not.

Seth