When selecting a timerange on the month calendar the new event modal popup keeps on hiding behind the Contentplaceholder in the Chrome and Firefox browsers.
If the modal gets hidden by another part of the page (that uses position:relative or position:absolute) you can increase the z-index value using .zIndex property of the DayPilot.Modal object.
See also: http://code.daypilot.org/81367/daypilot-modal
Works 100% thanks.