Sets or gets the icon image displayed on the slideshow button.
The icon property defines the vector image used as icon on the slideshow button.
Setting icon changes the slideshow button icon to the image indicated by the new value. Getting the icon property returns the location of the icon image file. To remove a slideshow button icon, set icon to null, undefined, or an empty string.
The following formats are supported:
Note: Raster images are not supported by this property.