JavaScript confirm cancel button not stopping JavaScript

Question

I have a delete button that is tied to some comments on a page i have. When you click the delete button i am trying to get a confirm dialog box to pop up asking if you are

Answer 1

function confirmCancel(){
   var msj='Are you sure that you want to delete this comment?';
   if (!confirm(msj)) { 
      return false;
   } else {
      window.location='backcables.php';
   }
}