title: Capitalize selected text in textarea
body: <p>I fail to capitalize selected text in textareas via onClick.</p>
  
  <p>After hours of googling I fopund out there is no built in method to get the select text in texareas.</p>
  
  <p>I found <a href="https://stackoverflow.com/questions/3964710/replacing-selected-text-in-the-textarea">Replacing selected text in the textarea</a> which replaces text.</p>
  
  <p>How could it be adjusted capitalize the selected text? </p>
  
  <p>Testing: <a href="http://jsfiddle.net/tDYe4/2/" rel="nofollow noreferrer">http://jsfiddle.net/tDYe4/2/</a></p>