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Troubleshooting: IE6 defect interferes with screen refresh of dynamic select controls

Symptom

If your application users acess Process Commander with Microsoft Internet Explorer Version 6.0 (IE6) and your application includes a Gradient filter in a style sheet, you will notice that scrolling the container window causes Dynamic Select controls (drop-down lists) to disappear.

When you click within the window at the locus of a particular Select control, the control reappears.

Solution

This is a known defect in IE6.The defect surfaces in applications using a customized CSS (referenced in a skin rule) in which a gradient filter has been enabled. The problem does not occur when you use the same CSS without a gradient filter applied, or the standard skins.

 

Example

The problem is caused by style coding like this example:

filter:progid:DXImageTransform.Microsoft.Gradient(enabled='true',GradientType=0, startColorStr='#E0E4ED', endColorStr='#95A6C7')

The following screens illustrate the initial UI state and the disappearance and reappearance of Dynamic Select controls when focus changes between your scrolling and clicking interactions.

select boxes appear

select boxes disappear

select boxes reappear

 

Suggested Approach

If you need to support IE6, do not use gradient filters when you customize the standard CSS.

If you need to use gradient filters in your customized CSS, upgrade to IE7. (Note that gradient features are a Microsoft extension to CSS, not supported by non-Microsoft browsers.)

For more information, refer to the Microsoft Developer Network (MSDN) article cited.

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