var http = createRequestObject();

function createRequestObject() {
    var ro;
    var browser = navigator.appName;

    if(browser == "Microsoft Internet Explorer") {
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else {
        ro = new XMLHttpRequest();
    }
    return ro;
}

function handleResponse() {
	if(http.readyState == 4){
        var response = http.responseText;
		document.form.hash.value = response;
		document.getElementById("captcha").src = "captcha/cap.php?hsh=" + response;
		document.myHash = response;
//apcha->captcha (Sanjeet)
    }
}

function newCaptcha(oldHash) {
    switchLoad();

    http.open("GET", "captcha/cap.php?hsh=" + oldHash + "&newhash");
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function switchLoad() {
	if(document.getElementById('getnewCaptcha').style.display=='none') {	
		document.form.submit.disabled = false;
		document.getElementById('getnewCaptcha').style.display='block';
		document.getElementById('loadingCaptcha').style.display='none';
	} else {
		document.form.submit.disabled = true;
		document.getElementById('loadingCaptcha').innerHTML = "Loading new code...";
		document.getElementById('getnewCaptcha').style.display='none';
		document.getElementById('loadingCaptcha').style.display='block';
	}
}