JSON loader replacement

jsonloader-1.js

function Jsonloader(options) {
  var defaults = {
    callbackInterval: 15000 //15 seconds
    callbackString: "jsoncallback",
    success = options.success || function() { },
    url = options.url || ""
  };

  this.defaults = jQuery.extend(true, defaults, options || {})
}

//PUBLIC API METHODS AND PROPERTIES		
Jsonloader.prototype.loadJson = function() {
  var that = this;
  return $.ajax({
    url                 : this.url,
    dataType            : 'jsonp',
    jsonpCallbackString : this.callbackString,
    success             : function(data) { that.success(data) }
  });
}

Jsonloader.prototype.setCallbackInterval = function() {
	//set callbackInterval prop on Jsonloader object
}

Jsonloader.prototype.createUpdateTimer = function() {
	//create setTimeout, which calls loadJson() method

}

Jsonloader.prototype.stopPolling = function() {
	//clear timeout
}

Jsonloader.prototype.startPolling = function() {
	//call createUpdateTimer()
}		


//PRIVATE METHODS AND PROPERTIES
function clearTimer(timer) {

}