//-------------------- mContentLoader.js 
var net = new Object();

net.READY_STATE_UNINITIALIZED= 0;
net.READY_STATE_LOADING      = 1;
net.READY_STATE_LOADED       = 2;
net.READY_STATE_INTERACTIVE  = 3;
net.READY_STATE_COMPLETE     = 4;

net.ContentLoader = function( component, url, method, requestParams ) {
   this.component     = component;
   this.url           = url;
   this.requestParams = requestParams;
   this.method        = method;
}

net.ContentLoader.prototype = {

   getTransport: function() {
      var transport;
      if ( window.XMLHttpRequest )
         transport = new XMLHttpRequest();
      else if ( window.ActiveXObject ) {
         try {
            transport = new ActiveXObject('Msxml2.XMLHTTP');
         }
         catch(err) {
            transport = new ActiveXObject('Microsoft.XMLHTTP');
         }
      }
      return transport;
   },

   sendRequest: function() {

      //if ( window.netscape && window.netscape.security.PrivilegeManager.enablePrivilege)
      //   netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');

      var requestParams = []
      for ( var i = 0 ; i < arguments.length ;  i++ )
         requestParams.push(arguments[i]);

      var oThis = this;
      var request = this.getTransport();
      request.open( this.method, this.url, true );
      request.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded');
      request.setRequestHeader( 'Pragma', 'no-cache');
      request.onreadystatechange = function() { oThis.handleAjaxResponse(request) };
      request.send( this.queryString(requestParams) );
  },

  queryString: function(args) {
     var requestParams = [];
     for ( var i = 0 ; i < this.requestParams.length ; i++ )
        requestParams.push(this.requestParams[i]);
     for ( var j = 0 ; j < args.length ; j++ )
        requestParams.push(args[j]);

     var queryString = "";
     if ( requestParams && requestParams.length > 0 ) {
        for ( var i = 0 ; i < requestParams.length ; i++ )
           queryString += requestParams[i] + '&';
        queryString = queryString.substring(0, queryString.length-1);
     }
     return queryString;
  },

  handleAjaxResponse: function(request) {
     if ( request.readyState == net.READY_STATE_COMPLETE ) {
        if ( this.isSuccess(request) )
           this.component.ajaxUpdate(request);
        else
           this.component.handleError(request);
     }
     else if ( request.readyState == net.READY_STATE_LOADING)
     {
			   
     }
  },

  isSuccess: function(request) {
    return  request.status == 0 
        || (request.status >= 200 && request.status < 300);
  }

};

function AJax(url, parameters) {
   this.strMethod = parameters['method'];
   this.strPostBody = parameters['postBody'];
   this.strComplete = parameters['onComplete'];
   this.strError = parameters['onError'];
   this.ajaxHelper = new net.ContentLoader( this, url, this.strMethod, [] );
   this.initializeBehavior();
}

AJax.prototype = {
   initializeBehavior: function() {
         this.ajaxHelper.sendRequest(this.strPostBody);
   },

   ajaxUpdate:  function(request) {
      eval(this.strComplete + "(request)");
   },

   handleError: function(request) {
      eval(this.strError + "(request)");
   }
};

function getElementContent(element,tagName) {
  var childElement = element.getElementsByTagName(tagName);
  if (childElement == null || typeof(childElement) == "undefined" || childElement.length == 0) {
    return "";
  }
  childElement = childElement[0];
  return childElement.text != undefined ? childElement.text : childElement.textContent;
}