I built a version of ShowCursor a few years ago, before WWC came out with DataGrids. It's fairly customizable, but it borrows heavily from the earlier versions of WWC. So I'm reluctant to post the code here.
I'll email it to you.
Date fields call a function this.cDate that returns the date in this format: "Mar25/13". You probably have something similar. Let me know if you want the code for that.
.. Geoff