//fade toggle effect
//jQuery.fn.fadeToggle = function(speed, easing, callback) {
//	return this.animate({opacity: 'toggle'}, speed, easing, callback);  
//};

//display popup mask & popup container
togglePopup = function(id, closeIds) {
	//$('.'+id+'-mask').fadeToggle('normal', function(){ $('#' + id).toggle(); } );
	$('#' + id).toggle();
	$('.'+id+'-mask').toggle();
	for (var it in closeIds) {
		if ($('#' + closeIds[it]).is(':visible')) {
			$('#' + closeIds[it]).toggle();
		}
	}
}