javascript string remove a character at position X and add to start
<p>If I have a string and a number:</p>

<pre><code>var str='Thisisabigstring';
var numb=7;
</code></pre>

<p>I'm trying to remove the character at position <code>'numb'</code> from the string and then put it at the beginning of the string.  </p>

<p>Trying for output like:</p>

<pre><code>'aThisisbigstring';
</code></pre>

<p>How can I do this with javascript/jquery?</p>
