image display

[<bhanu crlbel ernet in>]

On Fri, 9 Aug 2002 bhanu crlbel ernet in wrote:

> hello
>        I have a bg.png file with balck background with a green cirle divided into 4 quadrants in it. i use 
> this png as a back ground for fixed container. i display some png images inside the circle at specific 
> co-ordinates. the images keep moving as the co-ordinates change. when the image goes outside the circle it 
> should not be seen. or it should disappear. how to do this....do i have to do any masking.
>       i have attached the png file here. 
> any help would be very useful
>
> Regards
> Bhanusree