Centering the image

[Giridhar Manepalli]

Hello All,
I am using php mapscript. I cannot get the image to center when I
click on the image and with some zooming factor.

I am using image coordinates (not geographical coordinates) for zooming.

1.)Can anyone think of possible reasons? I can provide with any
necessary information.

2.) Also, how do I center the image based on my click without zooming?

3.) Finally, does the extent of the map automatically changed by
mapscript, when I zoom?

I hope, i can get this resolved!

Thanks,
Giridhar