function ajax(url, containerid){

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(containerid).innerHTML=xmlHttp.responseText
      }
    }
xmlHttp.open('GET', url, true)
xmlHttp.send(null)
 }