Hi Frank,
Very strange things are happening today.....IE seems to be working fine with the plugin!! Yesterday, I was testing on two computers, one running IE10 and the other IE9. Both were showing the symptoms I reported.
Today, there is no problem. I haven't rebooted, changed Joomla code, updated anything. I am at a loss for an explanation. I have noticed some strange stuff on IE10 that may be related to the plugin I am using for the tabs and sliders function (Tabs and sliders for articles from Joomlaworks). I do know that this plugin seems to completely break your plugin if using the tabs function for all browsers I have tested.
Anyway, sorry for the false alarm and many thanks for your excellent product and super support!!!
I am attaching samples of the code and the raw html I'm using.