JavaScript: add asmx support to jstree 0.99

jquery.tree.datastores.asmx.js

(functioin($) {
	$.extend($.tree.datastores, {
		"asmx": function() {
			// borrow datastore from "json"
			var asmxds = $.tree.datastores.json();

			// override "load" function:
			//	1. serialize input data into string through JSON.stringify
			//	2. add "contentType" attribute to $.ajax call
			asmxds.load = function(data, tree, opts, callback) {
				if (typeof(data).toLowerCase() != "string" && window.JSON) {
					data = JSON.stringify(data);
				}

				if(opts.static) {
					callback.call(null, opts.static);
				} 
				else {
					$.ajax({
						'type'		: opts.method,
						'url'		: opts.url, 
						'data'		: data, 
						'dataType'	: "json",
						'contentType': "application/json",
						'success'	: function (d, textStatus) {
							callback.call(null, d);
						},
						'error'		: function (xhttp, textStatus, errorThrown) { 
							callback.call(null, false);
							tree.error(errorThrown + " " + textStatus); 
						}
					});
				}
			};
			return asmxds;
		}
	});
})(jQuery);