Push DropDownList Control "Behind"

[Sharon]

Hello,

Is there a way to force the dropdownlist control to go "behind" another
control on a webform?

I have a calendar control that is positioned near a dropdown list in the
next row, and when the calendar is opened it is partially obscured by
the dropdown.

Is there a way to resolve this? If not, can someone recommend a calendar
control that will open "on top" of the dropdownlist control?

Thanks,

Sharon.