var Api = {

  API_URL: "./api/",

  access: function(apiName, params, complete) {
    if (params == null) params = {};
    var postParam = "";
    for (var k in params) {
      postParam += k + "=" + encodeURIComponent(params[k]) + "&";
    }
    var url = this.API_URL + apiName + ".php";
    new Ajax.Request(
      url, {
        method: "post",
        asynchronous: true,
        parameters: postParam,
        onComplete: complete
    });
  }
}