title: jquery unwanted double quotes in optgroup after adding option
body: <p>I load data from csv and split it to rows and than cells. In my csv file first cell in each row should be my optgroup and the rest should be options within current optgroup. Its working well with only optgroups (one loop), but when Im adding options Im getting extra double quotes in optgroup text and its not displayed. Pls help</p>
  
  <pre><code>//loading file
     $.get("file.csv",function(data)
  
  //spliting data
      {
          var rows=data.split("\n");
          for (var i=0; i&lt;rows.length; i++)
          {
              var cells=rows[i].split(";");
  
  //first cell in the row = optgroup
              $('select').append("&lt;optgroup&gt;"+cells[0]);
  
  //second loop - the rest of cells in the row = options
              for (var j=1; j&lt;cells.length; j++)
                  {
                      $('select optgroup').eq(i).append('&lt;option&gt;'+cells[j])
                  }
           }
       }); 
  </code></pre>