title: Placeholder in IE9
body: <p>It seems it's a very well known problem but all the solutions I found on Google don't work on my newly downloaded IE9.</p>
  
  <p>Which is your favorite way in order to enable the <code>Placeholder</code> property on the <code>input</code> and <code>textarea</code> tags?</p>
  
  <p>Optional: I lost a lot of time on that and didn't look for the <code>required</code> property yet. Would you also have some advice for this? Obviously I can check the value in PHP, but to help the user this property is very convenient.</p>