title: Unabled to get width() of the first column in table
body: <p>I need to get a width of the first column in my table. I do the following:</p>
  
  <pre><code>var table = $(".myTable");
  var firstColumnWidth = table.find("th:first").innerWidth();
  </code></pre>
  
  <p><strong>HTML:</strong></p>
  
  <pre><code>&lt;table class=""&gt;
  &lt;tr&gt;
    &lt;th&gt;&lt;/th&gt;
    &lt;th&gt;col 2&lt;/th&gt;
  &lt;/tr&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p>I get "0", even though when I add  a border while debugging, I see it at least 300px wide.</p>
  
  <pre><code>table.find("th:first").css("border","1px solid red");
  </code></pre>
  
  <p>What am I missing?</p>