Combo Drop down box in IE7 shows other dropdown when clicked

Feb 3, 2009 at 10:27 PM
Edited Feb 3, 2009 at 10:33 PM
We have been using drop down combo for a while in IE6 and it works fine but in IE 7 when some one click on the drop down arrow it shows the list but at the same time it also shows another list box which is on the same page right underneath the first drop down. So the situation is page has multiple instances of this dropdown combo, if users clicks on the top combo it shows the list and it also shows the combo underneath it so on and so forth, some how the background in IE7 does not hide other objects when combo box is in expanded state. Anyone else had the same issue? 

I am using assembly version

Any ussgestions would be greatly appreciated.