Released on August 24, 2008 (build 1490).
The initialization code of DayPilot Calendar was moved to window.onload handler (except of rendering in partial PostBack mode - inside an UpdatePanel).
It has a side effect (IE only): the rendering of the control will be delayed until all the page components are fully loaded (including images).
Waiting for document.readyState = 'complete' or 'interactive' appeared not to be effective.
If it proves to be the reliable solution (so far it works well) it will be ported to DayPilot Scheduler as well.