function verEmail(email)
{
    var er = /^[a-zA-Z0-9][a-zA-Z0-9\._-]+@([a-zA-Z0-9\._-]+\.)[a-zA-Z-0-9]{2}/;
    return er.exec(email);
}

function valContactForm(form)
{
    if (form.name.value == '')
    {
        alert('Please fill with your name');
    }
    else if (!verEmail(form.email.value))
    {
        alert('Invalid email!');
    }
    else if (form.message.value == '')
    {
        alert('Please fill the message');
    }
    else
        return true;
    return false;
}