function doAjaxAction(theAction){
  switch(theAction.d){
    case '_prompt' :
      // CALL PROMPT PROCEDURE
      prompt(theAction.c);
      break;
    case '_messageBox' :
      // CALL MESSAGE BOX PROCEDURE
      alert(theAction.c);
      break;
    case '_javascript' :
      // EXECUTE JAVASCRIPT CODE
      eval(theAction.c);
      break;
    case '_window' :
      // OPEN A WINDOW MODAL
      openWindow(theAction.c);
      break;
    case '_redirect' :
      // OPEN A WINDOW MODAL
      window.location.replace(theAction.c);
      break;
    default:
      $('#'+theAction.d).html(theAction.c);
      break;
  }
}
function ajaxAction(actions, returns, params){
	params = $.extend({
		'_a':actions,
		'_r':returns,
		'_d':(new Date()).getTime()
	},params);
	$.post( '/',
	
			params,
	
			function(data){
				$.each(data, function(i,item){
					doAjaxAction(item);
				});
			},
	
			'json'
	);
}

var _windowStack = new Array();
function openWindow(content){
	_windowStack.unshift(content);
	_displayWindow();
}


function _displayWindow(){
	if($('#_window').length!=0){
		$('#_window').remove();
	}
	$("<div id=\"_window\" title=\"\"></div>").appendTo("body")
	$('#_window').html(_windowStack[0]);
	$('#_window').dialog({
		modal:true,
		close: function(ev, ui) {
			_windowStack.shift();
			$('#_window').remove();
			if(_windowStack.length!=0){
				_displayWindow();
			}
		}
	});
}