function Validate_Subscribe(form) {
    if (form.SubscribeEmail.value.trim() == "") {
        alert("Please enter your Email Address");
        form.SubscribeEmail.focus();
        return false;
    }

    if (!form.SubscribeEmail.value.validEmail("E-mail Address")) {
        form.SubscribeEmail.focus();
        return false
    }

    return true;
}

function ClearSubscribeEmail() {
    if (frmSubscribe.SubscribeEmail.value == 'Your Email Address')
        frmSubscribe.SubscribeEmail.value = '';
}