RasterSprite( image, width, height )
Implements a rectangular area that shifts its background image's position to make visible specific region of the background.An
image URL might be prefixed by Raster resource-folder tag. The prefix
"IMG:" is replaced with the current raster/images location, for example:
"IMG:icon.gif" resolves to "$RASTER_HOME$/images/icon.gif". The prefix "CSS:"
is replaced with the current css themes images location, for example:
"CSS:icon.gif" resolves to "$RASTER_HOME$/themes/$THEME$/images/icon.gif".
Do not place a "/" between the prefix and the rest of the URL, as a forward slash will be inserted automatically. For configuring the RASTER_HOME and THEME use the
Raster.config() method.
    Parameters
| Name | Type | Description | |
|---|---|---|---|
| image | string | Either a string containing URL of an image file, or an object that implements the IID_SPRITEINFO interface. | |
| width | number | Specifies the width of this sprite | |
| height | number | Specifies the height of this sprite | 
