title: jquery: odd/even row elements + hover
body: <p>i'm styling a table with this command:</p>
  
  <pre><code>$("tr").filter(":odd").addClass("odd");
  </code></pre>
  
  <p>works nice. now i'm having a hover function which would show a cursor when i move the cursor over a row.</p>
  
  <p>the problem: on hover-out i want the table row getting back its "odd" class again, in order to keep the 2-colored layout. unfortunately it doesnt work - hovering-out will result in a plain class.</p>
  
  <p>here's my hovering-code:</p>
  
  <pre><code>function hover = function(tr,cod)
  {
      if(cod)
      {
          tr.addClass("hover");
      }else{
          if(tr.is(":odd"))
          {
              tr.addClass("odd");
          }else{
              tr.removeClass();
          }
      }
  }
  </code></pre>
  
  <p>anyone can tell me what's wrong?</p>
  
  <p>thx in advance.</p>