function objLock(obj)
{
    obj.append('<div id="objLock" class="transparent">&nbsp;</div>');
    obj.find('#objLock').height(obj.height());
    
}

function objUnLock(obj)
{
    obj.find('#objLock').remove();
}

function refreshCaptcha()
{
    var img = new Image();
    img.src = '/front/captcha/' + Math.floor(Math.random()*1000);
    img.onload = function() {
        if (this.complete || this.readyState == 'complete')
        {
            $('#captcha').attr('src', this.src);
        }
    };
    $('#captcha').attr('src', '/img/ajax-loader.gif');

    return false;
}