Obviously the Meta theme uses a lot of PNG images for styling its structural presentation. Many of these had to be striped for IE 6 since that browser can not use PNG files natively in content nor CSS elements such as background declarations. Fortunately however, the Meta theme does incorporate a JavaScript routine that enables PNG support for Internet Explorer in all the content areas. Meanwhile IE 7 does support PNG images. In this case it will ignore the IE 6 JavaScript fix.
If you are using Internet Explorer 6, the image's shadow below it should feather out smoothly to the paper background of the page. Normally IE 6 and lower will show a PNG with a light blue background. If you are using Firefox, Safari and the like, great, PNGs are supported natively.
