how to split javascript string, leaving just the characters
<p>I would like to know how can I split a long string to an array of words.
I would like to ignore/remove all the non alphabethic characters.</p>

<p>For example:
If I have the next string: "free games @ somewhere, visit us. don't want to miss out?, then go ahead &amp; visit us @ somewhere-to-download-from."</p>

<p>I would like it to be splitted to:
"free,games,somewhere,visit,us,don't,want,to,miss,out,then,go,ahead,visit,us,somewhere,to,down,load,from"</p>

<p>In the end I will have an array size 20 that on each cell it holds one word of the above.</p>
