var xmlmonthsHttp

function setmonths(str)
{ 
xmlmonthsHttp=GetxmlmonthsHttpObject();
if (xmlmonthsHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="setmonths.asp";
url=url+"?nmonths="+str;
url=url+"&sid="+Math.random();
xmlmonthsHttp.onreadystatechange=monthsstateChanged;
xmlmonthsHttp.open("GET",url,true);
xmlmonthsHttp.send(null);
}

function monthsstateChanged() 
{ 
if (xmlmonthsHttp.readyState==4)
{ 
}
}

function GetxmlmonthsHttpObject()
{
var xmlmonthsHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlmonthsHttp=new xmlHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlmonthsHttp=new ActiveXObject("Msxml2.xmlHttp");
    }
  catch (e)
    {
    xmlmonthsHttp=new ActiveXObject("Microsoft.xmlHttp");
    }
  }
return xmlmonthsHttp;
}