Function IMAGEOVERLAY
			
				Reads two source images and overlays the second source image on the first source image.
			
		
		
		
		Example
imageoverlay(any source1,any source2):void
Arguments
				The arguments for this function are set. You can not use other arguments except the following ones.
				
			
		
		
			| Name | Type | Required | Description | 
|---|---|---|---|
| source1 | any | Yes | The image that is the bottom layer in the image. | 
| source2 | any | Yes | the image that is the top layer (overlaid on the source1 image) in the image. | 
