title: How to create a <select> placeholder
body: <p>In my select elements, I want a default text such as "please select an option". Also I use the jQuery plugin <a href="http://bassistance.de/jquery-plugins/jquery-plugin-validation/" rel="nofollow">Validation</a> with my form so that the user cannot submit the form if he has not selected something in my select elements.</p>
  
  <p>Problem is, if I have "please select an option" in my selects, the form will validate.</p>
  
  <p>How to deal with this problem?</p>