I've run into a problem with expanding a dropdownlist when the client is IE6...
The screen allows users to optionally specify search selection criteria from dropdown listboxes. Since there may be a large amount of selection data, the usage of which is optional, the selection dropdown lists are only populated on demand (i.e., when the user clicks on the listbox -- I use the OnMousedown event). This improves the overall performance of the system since most users will not use the optional search data, saving time since that data is not retrieved from the Web Services calls and not added to the lists.
After loading the list, I fire the OnClick event to simulate the user's mouse click and display the list items that were just added. For IE7 or IE8, firing the onclick event works perfectly to expand the list. However, this does not work for IE6 -- it requires a second and third click on the listbox to display the list.
Note: replaci ...
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