ajax logic is not working correctly

Hello,

I am very beginner in JavaScript and don't know how to troubleshoot this.

The last logic where it says if(response == 0), else....doesn't work. whatever the result of my query is it will return as else.

I found this code from the page below:

http://woork.blogspot.com/2007/10/login-using-ajax-and-coldfusion.html

What I need to do here is if response is not equal to 0 then send user to page window.location='pagexyz.cfm'; and else go to a different page.

Thanks in advanced

<script type="text/javascript" language="JavaScript">
   <cfoutput>
 /* ---------------------------- */
 /* XMLHTTPRequest Enable */
 /* ---------------------------- */
 function createObject() {
 var request_type;
 var browser = navigator.appName;
 if(browser == "Microsoft Internet Explorer"){
 request_type = new ActiveXObject("Microsoft.XMLHTTP");
 }else{
 request_type = new XMLHttpRequest();
 }
 return request_type;
 }
 
 var http = createObject();
 
 /* -------------------------- */
 /* LOGIN */
 /* -------------------------- */
 /* Required: var nocache is a random number to add to request. This value solve an Internet Explorer cache issue */
 var nocache = 0;
 function login() {
 // Optional: Show a waiting message in the layer with ID ajax_response
 document.getElementById('login_response').innerHTML = "Loading..."
 // Required: verify that all fileds is not empty. Use encodeURI() to solve some issues about character encoding.
 var email = encodeURI(document.getElementById('emailLogin').value);
 var psw = encodeURI(document.getElementById('pswLogin').value);
 // Set te random number to add to URL request
 nocache = Math.random();
 // Pass the login variables like URL variable
 http.open('get', 'includes/loginquery.cfm?email='+email+'&psw='+psw+'&nocache = '+nocache);
 http.onreadystatechange = loginReply;
 http.send(null);
 }
 function loginReply() {
 if(http.readyState == 4){
 var response = http.responseText;
 if(response == 0){
 // if login failsa
 document.getElementById('login_response').innerHTML = 'Login failed! Verify user and password';
 // else if login is ok show a message: "Welcome + the user name".
 } else {
 document.getElementById('login_response').innerHTML = response;
 window.location='#eqSiteRoot#member/index.cfm';
 }
 }
 }
  </cfoutput>