Header Size?

Hi I'm not the project author, but I use the theme and can answer your question.

The default size required by the theme is 970 pixels x 200 pixels, and the images can be gif, jpg, or png by default. You can edit marinelli/img/banners/rotate.php to add types. Any type of file that works in an image tag on modern browsers will work with the theme if you add it to rotate.php.

I would not recommend using psd (photoshop) files, as the file size is considerably larger than its jpg/png counterpart, and more importantly, most browsers will not display it. Mac browsers using CoreImage can do this, but other than that I don't expect you'd have much luck.

You can user smaller files too if you adjust the header dimensions in the css accordingly... do a search for "200px" and you'll probably find the right place. For example, on my site I use an image only 170px high then adj header height accordingly.