var yt = yt || {}; yt.timing = yt.timing || {}; yt.timing.tick = function (label, opt_time) { var timer = yt.timing['timer'] || {}; if (opt_time) { timer[label] = opt_time; } else { timer[label] = new Date().getTime(); } yt.timing['timer'] = timer; }; yt.timing.info = function (label, value) { var info_args = yt.timing['info_args'] || {}; info_args[label] = value; yt.timing['info_args'] = info_args; }; yt.timing.info('e', "923111,916616,922401,920704,912806,927201,925706,928001,922403,913546,913556,920201,911116,901451"); if (document.webkitVisibilityState == 'prerender') { document.addEventListener('webkitvisibilitychange', function () { yt.timing.tick('start'); }, false); } yt.timing.tick('start'); yt.timing.info('li', '1'); try { yt.timing['srt'] = window.gtbExternal && window.gtbExternal.pageT() || window.external && window.external.pageT; } catch (e) { } if (window.chrome && window.chrome.csi) { yt.timing['srt'] = Math.floor(window.chrome.csi().pageT); } if (window.msPerformance && window.msPerformance.timing) { yt.timing['srt'] = window.msPerformance.timing.responseStart - window.msPerformance.timing.navigationStart; }