var keyCaptcha = null;
var urlCaptcha = UrlBase + '/Captcha.captcha?width=0&height=0&key=';
var urlEmptyCaptca = UrlBase + "/images/sharing/Captcha.jpg";

if (initCaller != null) 
    initCaller.push("initCaptchaControl()");

function initCaptchaControl() {
    $('#hiddenText').hide();
    $('img.captchaArea').attr('src', urlEmptyCaptca);
    keyCaptcha = Math.random();
}

function getCaptchaText(parent) {
    return $('input.txtConfirmText', parent).get(0).value;
}
function getCaptchaKey() {
    return keyCaptcha;
}

function setBlankCaptcha(parent) {
    $('img.captchaArea', parent).attr('src', urlEmptyCaptca);
    $('input.txtConfirmText', parent).val("");
}
function setNewCaptcha(parent) {
    keyCaptcha = Math.random().toString();
    $('img.captchaArea', parent).attr('src', urlCaptcha + keyCaptcha);
    $('input.txtConfirmText', parent).val("");
}
function clearCaptcha(parent) {
    $('img.captchaArea', parent).attr('src', '');
    $('input.txtConfirmText', parent).val("");
}