That can be any value supported by jquery show(param) method.
'Declaration Public Property OpenAnimation As System.String
public System.string OpenAnimation {get; set;}
Target Platforms: Windows 8.1, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
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