zoneminder/web/skins/classic/views/js/cycle.js

function nextCycleView() {
  window.location.replace( '?view=cycle&mid='+nextMid+'&mode='+mode, cycleRefreshTimeout );
}

function initCycle() {
  nextCycleView.periodical( cycleRefreshTimeout );
}

window.addEvent( 'domready', initCycle );