how to show confirmation alert with three buttons 'Yes' 'No' and 'Cancel' as it shows in MS Word
<p>I have showing a confirmation alert box through my javascript as following</p>

<pre><code>function checked() {
 if (hdnval.toLowerCase() != textbox1.toLowerCase()) {
  var save = window.confirm('valid')
   if (save == true) 
   {
     return true;
   }
   else
    {
      return false;
    }
 }
}
</code></pre>

<p>the confirmation alert is showing with two btn OK and Cancel.</p>

<p>I want to show 3 button in my confirmation alert 'Yes' 'No' 'Cancel', as it shows in MS Word.</p>

<p>is it possible if yes then its possible? please someone help me.</p>

<p>thanks in advanced.</p>
