var xmlhttp;

function City_subcrib_Select(str)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="subscribecity-category_select.php";
url=url+"?q="+str;
xmlhttp.onreadystatechange=City_subcrib_Changed;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function City_subcrib_Changed()
{
if (xmlhttp.readyState==4)
{
document.getElementById("subcat_select_id").innerHTML=xmlhttp.responseText;
}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}