function changeTabs(tab)
{
  changeStyleTabs(tab);

  function ok(obj)
  {
    //alert('ok');
    //location.reload(true);
  }

  var sUrl = '/ajaxactions/changetabs';
  var callback =   { cache: false, success: ok, failure: function(obj){} }
  YAHOO.util.Connect.asyncRequest('POST', sUrl, callback, 'tab=' + tab);
}

function changeStyleTabs(tab)
{
  if (tab == 'popularTab')
  {
    $$('popularTab').style.background = 'url(/static/images/layout/enabletabsupport.png) no-repeat'
    $$('listPopular').style.display = 'block';
    $$('popularTab').style.color = '#f8b605';
    $$('recentTab').style.color = '#FFFFFF';
    $$('popularTab').style.fontWeight='bold';    
    $$('recentTab').style.fontWeight='normal';
    
    $$('recentTab').style.background = 'url(/static/images/layout/disableRecent.png) no-repeat'
    $$('listRecent').style.display = 'none';
    
  }
  else
  {
    $$('recentTab').style.background = 'url(/static/images/layout/enableRecent.png) no-repeat'
    $$('listRecent').style.display = 'block';
    $$('recentTab').style.color = '#f8b605';
    $$('popularTab').style.color = '#FFFFFF';
    $$('recentTab').style.fontWeight='bold';
    $$('popularTab').style.fontWeight='normal';
    
    $$('popularTab').style.background = 'url(/static/images/layout/disabletabsupport.png) no-repeat'
    $$('listPopular').style.display = 'none';  
  }

}