Format a Number, Exactly Two in Length?
<p>I have an integer that is less then 100 and is printed to an HTML page with JavaScript.  How do I format the integer so that it is exactly two digits long? For example:</p>

<p>01<br>
02<br>
03<br>
...<br>
09<br>
10<br>
11<br>
12<br>
...  </p>
