function validate(formular)
{
     if (formular.email.value=="")
    {
        alert("Email is required!");
        formular.email.focus();
        return false;
    }


    else if (formular.zprava.value=="")
    {
        alert("Message is required!");
        formular.zprava.focus();
        return false;
    }
    else if (window.RegExp)
    {
        re = new RegExp("^[^@]+@[^.]+\..+$");
        if (!re.test(formular.email.value))
        {
            alert("This is not right email address!");
            formular.email.focus();
            return false;
        }
    }
    else
        return true;
}