/* 	2013-04-20 CNIT 132/CNIT 133 CCSF
	ajax_sample.js
	External JavaScript file for ajax_sample.html
	This file contains generic AJAX functions
*/


function stateChanged() { 
   if (xmlHttp.readyState==4) { 
	if (xmlHttp.status == 200) {
		process_return_data();	   
   	} else {
	   alert("Problem with retrieving data, status is : " + xmlHttp.statusText);
	}
   }
}

function GetXmlHttpObject() {
var loc_xmlHttp=null;
try {
  // Firefox, Opera 8.0+, Safari, IE 7
  loc_xmlHttp=new XMLHttpRequest();
}
   catch (e) {
     // Internet Explorer 5 or 6
     try {
       loc_xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
     }
     // Older version of IE	
     catch (e) {
       loc_xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
     }
   }
return loc_xmlHttp;
}