resize on blackberry curve 9360

Hi,

I need to place a picture in the header of the website, so I tried using custom HTML code module and Header module but both are displaying the picture too large on my Blackberry Curve 9360.
i39.tinypic.com/21kjdhk.png

Both my PC Firefox browser and my Android device display it correctly.

Is it possible to edit the CSS code to better resize to the devices screen?

Thanks