Thank you for contacting us. The first issue is related to the fact that a background image is used to colorize the fieldset background, and when the content is higher than the image size it start to show white color, or the default page background color. This could be fixed with the following CSS code for the Vista skin:
The second problem is related with the fact that IE6, 7, 8 does not support rounded corners, and when to simulate it in these older browsers, we have different HTML rendering for them, so an additional table is wrapped around the fieldset element to mimic rounded corners. A possible solution is to remove the rounded corners for IE6, 7 and 8, so the additional table to disappear form the rendered code, and everything will work as expected. Of course, the rounded corners will be lost for IE 6, 7 and 8, but will be there in all other modern browsers. You should put the following in the code behind:
StrangeDecoratedControls : System.Web.UI.Page
sender, EventArgs e)
//Check for Internet Explorer, versions 6,7 and 8
) && Request.Browser.MajorVersion < 9)
Attached is fixedCollpasableFSinIE8.zip containing a fully working example with all fixes provided above.
All the best,
the Telerik team
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