RadRotator problem in firefox 3.6 - Horizontal line appears when we hover on left or right buttons [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reaso开发者_Python百科nably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

i am using firefox 3.6 & vs2010 asp.net empty application with c#...

i do not know what is going on about my radrotator in firefox? (In IE Every thing Is Ok)

when we hover on left or right buttons In RadRotator , a Horizontal line appears!

how can i fix this problem?

thanks for attention

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i figured out this problem was about text-ident=-9999px; css of those buttons...