function ajaxFunction(pageName)
											  {
											  var xmlHttp;
											  try
											    {
											    // Firefox, Opera 8.0+, Safari
											    xmlHttp=new XMLHttpRequest();
											    }
											  catch (e)
											    {
											    // Internet Explorer
											    try
											      {
											      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
											      }
											    catch (e)
											      {
											      try
											        {
											        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
											        }
											      catch (e)
											        {
											        alert("Your browser does not support AJAX!");
											        return false;
											        }
											      }
											    }
											    xmlHttp.onreadystatechange=function()
											      {
											      if(xmlHttp.readyState==4)
											        {
											        document.getElementById("tabcontent").innerHTML=xmlHttp.responseText;
											        }
											      }
											    xmlHttp.open("GET",pageName,true);
											    xmlHttp.send(null);
											  }