Nitobi combobox - button misalignment in ie8

[ravi]

Hello All,

The nitobi combo box being used in our web application has a small UI
issue in IE8.
The button of the combo box is misaligned with the combo box text
component by a very negligible margin.
I checked and rechecked all the CSS defined for both the components
but coud not figure out.

Note that this works perfectly fine in all other version of IE(i.e
IE7, IE6 etc).

Any advise on this issue would be greatly appreciated.

Thanks
Ravi