(function ($) {
	$.fn.selectChain = function (options) {
		var defaults = {
			key: "id",
			value: "label"
		};
		var settings = $.extend({}, defaults, options);
		if (!(settings.target instanceof $)) settings.target = $(settings.target);
		return this.each(function() {
			var $$ = $(this);
			$$.change(function () {
				var data = null;
				if (typeof settings.data == 'string') {
					data = settings.data + '&' + this.name + '=' + $$.val();
				} else if (typeof settings.data == 'object') {
					data = settings.data;
					data[this.name] = $$.val();
				}
				settings.target.empty();
				$.ajax({
					url: settings.url,
					data: data,
					type: (settings.type || 'get'),
					dataType: 'json',
					success: function (j) {
						var options = [], i = 0, o = null;
						for (i = 0; i < j.length; i++) {
							// required to get around IE bug (http://support.microsoft.com/?scid=kb%3Ben-us%3B276228)
							o = document.createElement("OPTION");
							o.value = typeof j[i] == 'object' ? j[i][settings.key] : j[i];
							o.text = typeof j[i] == 'object' ? j[i][settings.value] : j[i];
							settings.target.get(0).options[i] = o;
						}
						// hand control back to browser for a moment
						setTimeout(function () {
							settings.target
							.find('option:first')
							.attr('selected', 'selected')
							.parent('select')
							.trigger('change');
						}, 0);
					},
					Error: function (xhr, desc, er) {
						// add whatever debug you want here.
						alert("an error occurred");
					}
				});
			});
		});
	};
})(jQuery);