function warp_newsletter_subscribe()
{
	warp_newsletter_status(false);
	xajax_newsletter_subscribe( $("frm_warp_newsletter").serialize() );
}

function warp_newsletter_unsubscribe()
{
	warp_newsletter_status(false);
	xajax_newsletter_unsubscribe( $("newsletter_email").value );
}

function warp_newsletter_status(value)
{
	$("warp_button_subscribe").disabled = !value;
	$("warp_button_unsubscribe").disabled = !value;
	
	$("warp_button_subscribe").className = value?"button":"button disabled";
	$("warp_button_unsubscribe").className = $("warp_button_subscribe").className;
}