// CREATING THE REQUEST
 
 function createRequestObject()
 {
 try
 {
 xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
 }
 catch(e)
 {
 alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
 }
 return xmlhttp;
 }
 
 var http = createRequestObject();
 var sess = createRequestObject();
 
 // IMAGE REFRESHING
 
 function refreshimg()
 {
 var url = 'captcha/image_req.php';
 dorefresh(url, displayimg);
 }
 
 function dorefresh(url, callback)
 {
 sess.open('POST', 'newsession.php', true);
 sess.send(null);
 http.open('POST', url, true);
 http.onreadystatechange = displayimg;
 http.send(null);
 }
 
 function displayimg()
 {
 if(http.readyState == 4)
 {
 var showimage = http.responseText;
 document.getElementById('captchaimage').innerHTML = showimage;
 }
 }
 
 // SUBMISSION
 
 function check()
 {
 var submission = document.getElementById('captcha').value;
 var url = 'captcha/process.php?captcha=' + submission;
 docheck(url, displaycheck);
 }
 
 function docheck(url, callback)
 {
 http.open('GET', url, true);
 http.onreadystatechange = displaycheck;
 http.send(null);
 }
 
 function displaycheck()
 {
 if(http.readyState == 4)
 {
 var showcheck = http.responseText;
 if(showcheck == '1')
 {
 document.getElementById('captcha').style.border = '1px solid #49c24f';
 document.getElementById('captcha').style.background = '#bcffbf';
 }
 if(showcheck == '0')
 {
 document.getElementById('captcha').style.border = '1px solid #c24949';
 document.getElementById('captcha').style.background = '#ffbcbc';
 
 }
 }
 }