function startLoading() {
	  /*Element.show('mainAreaLoading');*/
	  Element.hide('mainAreaInternal');
	}
	function finishLoading() {
	  Element.show('mainAreaInternal');
	  /*setTimeout("Effect.toggle('mainAreaLoading');", 1200);*/
	}

	function loadContent(id) {
	  startLoading();
	  new Ajax.Updater('mainAreaInternal', 'rpc.php', {method: 'post', postBody:'content='+ id +''});
	  finishLoading();
	}