var http_request = false;
var div_name;
 function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
     var please_wait = "<span class='loader'>&nbsp;<br />&nbsp;</span>";
      http_request.onreadystatechange = alertContents;
    if(please_wait)document.getElementById(div_name).innerHTML = please_wait;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById(div_name).innerHTML = result;
         } else {
            alert('There was a problem with the request.');
         }
      }
   }  
function phone(obj)
{
      var phone_check = "preNum=" + encodeURI( document.getElementById("preNum").value ) +
                        "&areaCode=" + encodeURI( document.getElementById("areaCode").value );
      div_name = "phone-result";
      makePOSTRequest('./includes/phone_home.php', phone_check);
}
function nl(obj)
{
      var hamara_nl = "email=" + encodeURI( document.getElementById("email").value );
      div_name = "nl-area";
      makePOSTRequest('./includes/newsletter1.php', hamara_nl);
}
function isNumberKey(evt)
{
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
}