function captcha() {
	$.post('/index/captcha', null,
	function(data) {
			$("#recaptcha").hide();
        	$("#recaptcha").html(data);
        	$("#recaptcha").show();
    	}
	);
}

function checkmail(email) {
	var reg = /^[a-z0-9._-]+@[a-z0-9.-]{2,}[.][a-z]{2,4}$/
	return (reg.exec(email)!=null)
}

function go(url) {
location=url;	
}