"Show Hint" IE Version 6 Overlap issue

1) Script Title: Show Hint script

2) Script URL (on DD):
DynamicDrive Source page:
http://www.dynamicdrive.com/dynamicindex16/showhint.htm

Sample page that you can view:
http://ManageDiabetesNow.com/IEoverlapIssue.html
Note: all script code is virgin from DD and unmodified. Code in Body tags is unique but simply calls the stock DD script on the same page.

3) Describe problem:
Hint box is covered-partially obscured by drop-down selection fields in IE Version 6. Firefox is OK.

If you mouse over the show hint indicator in Firefox on the sample page, all is ok but if you mouse over the hint in IE Version 6, the pages drop-down box overlaps the hint box and wipes out parts of the text.