title: rails select_tag selected value
body: <p>For the code given below I wanted to keep the select box selected with the value that is passed.</p>
  <p>But this doesn’t work:</p>
  <pre><code>@yrs =[2011,2010,2009,2008]
  &lt;%= select_tag 'year', options_for_select([[&quot;Select&quot; , &quot;&quot; ]] + @yrs.to_a,:selected=&gt;2011) %&gt;
  </code></pre>
  <p>Please advise me how to go about it.</p>