var AjaxFunctions = {
  update: function(update_id, url, method, params, callback) {
    var myAjax = new Ajax.Updater(
      update_id,
      url,
      {
        method: method,
        parameters: params,
        onComplete: callback
      });
  },

  call: function(url, method, params, callback, params_func) {
    if (params_func) {
      if (params.length != 0) params += "&";
      params += $H(params_func()).toQueryString();
    }
    var myAjax = new Ajax.Request(
      url,
      {
        method: method,
        parameters: params,
        onComplete: callback
      });
  },

  submit: function(form, params, callback) {
   var myAjax = new Ajax.Request(
      form.action,
      {
         method: form.method,
         parameters: Form.serialize(form.id),
        onComplete: callback || this.onSubmit
      });
  },

  onSubmit: function(originalRequest) {
    var results = originalRequest.responseText.split(";");

    if (results[0] == "true") {
      AjaxFunctions.Messages.set(results[1], AjaxFunctions.Messages.MT_WARNING)
    } else {
      AjaxFunctions.Messages.clear();
      AjaxFunctions.Messages.setType(AjaxFunctions.Messages.MT_ERROR);
      for (var i = 1; i < results.length; i++) {
        AjaxFunctions.Messages.add(results[i]);
      }
    }
  }
}

AjaxFunctions.GlobalHandlers = {
   onCreate: function() {
      AjaxFunctions.Process.show();
   },

   onComplete: function() {
      if(Ajax.activeRequestCount == 0){
      AjaxFunctions.Process.hide();
      }
   }
};

Ajax.Responders.register(AjaxFunctions.GlobalHandlers);

AjaxFunctions.Messages = {
  MT_WARNING: 0,
  MT_ERROR: 1,

  S_MT_WARNING: "Please note:",
  S_MT_ERROR: "Please fix following errors:",

  initialize: function() {
    this.messages = $("messages");
    this.messagesTitle = $("messages-title");
  },

  clear: function() {
    if (!this.messagesList) {
      this.messagesList = $("messages-list");
      if (!this.messagesList) return;
    }
   this.messagesList.innerHTML = "";
   this.messagesList.style.display = "none";
  },

  add: function(message) {
    if (!this.messagesList) {
      this.messagesList = $("messages-list");
      if (!this.messagesList) return;
    }
   var messageLI = document.createElement("LI");
   messageLI.innerHTML = message;
   this.messagesList.appendChild(messageLI);
   this.messagesList.style.display = "block";
   Element.scrollTo("messages");
  },

  set: function(message, type) {
    this.clear();
    this.setType(type);
    this.add(message);
  },

  setType: function(type) {
    if (!this.messages) this.messages = $("messages");
   if (!this.messagesTitle) this.messagesTitle = $("messages-title");
   switch (type) {
     case this.MT_ERROR:
       if (this.messages) this.messages.className = "data-error";
       if (this.messagesTitle) this.messagesTitle = this.S_MT_ERROR;
       break;
     case this.MT_WARNING:
     default:
       if (this.messages) this.messages.className = "data-warning";
       if (this.messagesTitle) this.messagesTitle = this.S_MT_WARNING;
   }
  }
}

AjaxFunctions.Process = {
  S_PROCESS: "processing request... <img src=\"/images/ajax-loader.gif\" border=\"0\">",

  show: function() {
    if (!this.process) {
      this.process = $("ajax-process");
      if (!this.process) return;
    }
    var top = window.pageYOffset ? window.pageYOffset : document.documentElement ? document.documentElement.scrollTop : document.body.scrollTop;
    this.process.style.top = top + "px";
    this.process.innerHTML = this.S_PROCESS;
    this.process.style.display = "inline";
  },

  hide: function() {
    if (!this.process) {
      this.process = $("ajax-process");
      if (!this.process) return;
    }
    this.process.style.display = "none";
  }
}