Alternatively, quit using the incredibly cruddy Internet Explorer and use Firefox instead.
With Firefox, should you navigate away from a page in which you've filled in a form (such as the compose post window on this forum) and encounter a problem, clicking the 'back' button will return you to the previous page with any text you've entered thereon still present.
Clicking 'back' in IE will return you to the previous page just as well, only the fields will be blank, your nonpareil words of witticism lost forever.