function make_captcha(captcha) {
	$('#' + captcha).html('');
	$.ajax({
		type: "GET",
		url: "/ajax/ajax_session.php",
		async: true,
		data: "action=make_captcha&rand=" + Math.random(),
		success: function(){
			$('#' + captcha).html('<img style="height:60px;" src="/kcaptcha/index.php?rand=' + Math.random() + '"/>');
		}
	});
}