title: Why YUI ToolTip can't on top in JQuery Dialog
body: <p>I try to show some tooltip on MsChart which is on the jQuery Dialog but the tooltip never on top of dialog. 
  Below is my total source code.</p>
  
  <hr>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  
      $(function () {
  
          $("#dialog2").dialog({
              autoOpen: true,
              width: 640,
              height: 'auto',
              position: [100, 110]
          });
  
          for (var i = 0; i &lt; $('area').length; i++) {
  
              $('area:eq(' + i + ')').attr('id', 'area-id-' + i); //change id 
              $.data(this, 'area-title-' + i, $('area:eq(' + i + ')').attr('title')); //store title 
  
              if ($.data(this, 'area-title-' + i) != undefined) {
  
                  new YAHOO.widget.Tooltip("myTip", {
                      context: 'area-id-' + i,
                      text: "hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;hello&lt;br/&gt;",
                      width: 300,
                      container: this.dialog2,
                      autodismissdelay: 3600000, // show one hour 
                      showdelay: 0
                  });
              }
          }
      });
  
  &lt;/script&gt;
  
  &lt;div id="dialog2" title="my chart"&gt;
      &lt;asp:Chart ID="Chart1" runat="server"&gt;
          &lt;Series&gt;
              &lt;asp:Series Name="Series1"&gt;
              &lt;/asp:Series&gt;
          &lt;/Series&gt;
          &lt;ChartAreas&gt;
              &lt;asp:ChartArea Name="ChartArea1"&gt;
              &lt;/asp:ChartArea&gt;
          &lt;/ChartAreas&gt;
      &lt;/asp:Chart&gt;
  &lt;/div&gt;
  
  protected void Page_Load(object sender, EventArgs e)
  {
      if (!IsPostBack)
      {
          List&lt;string&gt; rom_list = new List&lt;string&gt;();
          rom_list.Add("1.1");
          rom_list.Add("1.2");
          rom_list.Add("1.3");
          rom_list.Add("1.4");
          rom_list.Add("1.5");
  
          List&lt;double&gt; value_list = new List&lt;double&gt;();
          value_list.Add(4);
          value_list.Add(2);
          value_list.Add(6);
          value_list.Add(3);
          value_list.Add(8);
  
          Chart1.Series[0].Points.DataBindXY(rom_list, value_list);
  
          foreach (System.Web.UI.DataVisualization.Charting.DataPoint point in Chart1.Series[0].Points)
          {
              point.ToolTip = "this is tooltip " + point.YValues[0].ToString();
          }
      }
  }
  </code></pre>