Sets or retrieves a value that indicates whether the gradient band moves vertically or horizontally.
Syntax
HTML Scripting 
Possible Values
iStyle String that specifies or receives one of the values listed in Possible Values. 
- 0
- Default. Transition passes horizontally from left to right.
1- Transition passes vertically from top to bottom.
The property is read/write. The property has a default value of 0.
Applies To
GradientWipe