title: JavaScript: Code sample of Global Variables "Use Strict" Explanation
body: <p>I am learning jquery and started my first attempt at building a form validation script based on what I know so far (which isnt much). </p>
  
  <p>This is really only the Radio button portion of the validation script, but I thought I get on the right track -coding wise- before I went too far. There are some fundamental issues that I know need addressing.</p>
  
  <p>The Script (jsFiddle): <a href="http://jsfiddle.net/pkdsleeper/xNt5n/" rel="nofollow">http://jsfiddle.net/pkdsleeper/xNt5n/</a></p>
  
  <p>The Questions:</p>
  
  <pre><code>a. How best to remove the global variables using 
  b. jsLint recommends "use strict", so I added it, but im not sure what it does. 
  c. any good refs?
  d. Generally, feel free to rip this code apart (cuz I AM trying to learn) but 
     please explain my errors in noob-speak :)
  </code></pre>
  
  <p>Thanks In advance<br>
  sleeper</p>