I’ve built an app for iPad using DHTMLX and PhoneGap, and it works fine, thanks for the great toolset 
I’ve been asked to deploy a web version of the app, to run in a browser on any given PC, which I’ve done with a few minor amendments and which works without issue in most browsers on a Windows PC (particularly Chrome and Safari). It even works on my iPad in mobile Safari.
However my development machine is an iMac, and on here I have an issue in both Safari and Chrome, in that the Datepicker widget doesn’t work properly. I’m using the time select feature of the Datepicker to select both a date and a time, and the time option appears as a simple drop-down select list. However, when I try to select a time from the dop-down the Datepicker closes before I can make a selection.
This only happens on my iMac. Windows is fine, iPad is fine, it’s just the Mac.
I know this is a long-shot, but any ideas what may be causing this?