function Suscripcion( ) {

	if (document.getElementById('baja').checked) { return true; }
	 
	var email = document.getElementById('email'); 
	if ( !email || !email.value ) { alert('Introduce un email válido'); return false; }
	
	var oWin; 
	oWin=window.open('/form_suscripcion.php?email='+email.value,'suscripcion', 'width=500,height=500,scrollbars=yes,toolbar=no,menubar=no,status=no' );
	if (oWin) {
		oWin.focus();
	}
	
	return false;
}