title: Fix a character to text input box using javascript/jquery
body: <p>I am looking for a way to 'fix' a dollar symbol $ to a text input box eg <code>&lt;input type="text" value="$" /&gt;</code> but make it not possible for the default value to be removed, so that whatever the user inputs, there is always a $ symbol 'prepending' input.</p>
  
  <p>Cheers</p>