Hi,

I assume that you have TargetUrl and on click of tab-label of already selected tab you want to reload content of that target.
To do that, you need to process TabClick client event. In case of local aspx you may get reference to document and submit it. However, in case of external web site the best you can do is to reload src of that page. Below is example for both cases:

<script type="text/javascript">
function UltraWebTab1_Click(oWebTab, oTab, oEvent)
{
 // test for same tab click
 if(!oTab || oWebTab.getSelectedTab() != oTab)
  return;
 var iframe = oTab.elemIframe;
 if(!iframe)
  return;
 var doc = oTab.getTargetUrlDocument();
 if(doc)
 {
  try
  {
   // if local asxp, then try to submit it
   doc.forms[0].submit();
  }
  catch(ex){}
  return;
 }
 // if external website, then reset its src
 iframe.src = '';
 iframe.src = oTab.getTargetUrl();
}
</script>
<igtab:UltraWebTab ID="UltraWebTab1" runat="server" Height="300px" Width="400px">
     <ClientSideEvents Click="UltraWebTab1_Click" />
     <Tabs>
      <igtab:Tab Text="Tab1">
       <ContentPane TargetUrl="http://www.google.com">
       </ContentPane>
      </igtab:Tab>
      <igtab:Tab Text="Tab2">
       <ContentPane TargetUrl="Temp2.aspx">
       </ContentPane>
      </igtab:Tab>
     </Tabs>
</igtab:UltraWebTab>