var CONTENT_ELEMENT_ID          = 'content';
var SERVER_ELEMENT_CLASS        = 'serverElement';
var SERVER_ELEMENT_ID_PREFIX    = 'serverElement';
var SERVER_LINK_CLASS           = 'serverLink';
var SERVER_LINK_ID_PREFIX       = 'serverLink';
var CAMERA_ELEMENT_CLASS        = 'cameraElement';
var CAMERA_ELEMENT_ID_PREFIX    = 'cameraElement';
var CAMERA_LINK_CLASS           = 'cameraLink';
var CAMERA_LINK_ID_PREFIX       = 'cameraLink';
var AREA_ELEMENT_CLASS          = 'areaElement';
var AREA_ELEMENT_ID_PREFIX      = 'areaElement';
var STATISTICS_LINK_CLASS             = 'statisticsLink';
var STATISTICS_LINK_ID_PREFIX         = 'statisticsLink';