(function($){
	$.fn.toggleVisibility = function() {
		
		return this.each(function() {		
			var element = $(this);
            var state = element.css('visibility');
            if (state == "hidden") {
                element.css({'visibility':'visible'});
            }
            else {
                element.css({'visibility':'hidden'});
            }
		});
	
	};
})(jQuery);