Proportionally fitting images in Slideshow 2!

Hi

I have set an overall size for the Slideshow 2! div in the CSS file as follows:

[CODE].slideshow {
height:250px;
margin: 0 auto;
width:420px;
}[/CODE]

I would then like all the images I use in the slideshow to fit within this area (i.e. 420 x 250). The images will all have a height of 250px, but different widths. For widths less than 420px I would like the image to be positioned centrally along the horizontal axis in the div as in this image:

[url=http://emberapp.com/users/nickharambee/images/5][img]http://emberapp.com/nickharambee/images/5/sizes/m.png[/img][/url]

for images wider than 420px I would like them to be positioned centrally along the vertical axis in the div as in this image:

[url=http://emberapp.com/users/nickharambee/images/2][img]http://emberapp.com/nickharambee/images/2/sizes/m.png[/img][/url]

I wonder if it’s possible to achieve this with Slideshow 2! and if not, whether another script will help me achieve this?

Thanks

Nick

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