NavigationButton.Transparent Property (Access)
You can use the Transparent property to specify whether a command button is solid or transparent. Read/write Boolean.
Use the BackStyle property to make other controls solid or transparent.
You can use this property to place a transparent command button over another control. For example, you could place several transparent buttons over a picture displayed in an image control and run various macros or Visual Basic event procedures depending on which part of the picture the user clicks.
To hide and disable a button, use the Visible property. To disable a button without hiding it, use the Enabled property. To hide a button only when a form or report is printed, use the DisplayWhen property.