You can create borders around your profile so it looks like floating in the middle.

With this trick you can specify different size and color for the top, bottom, left, and right side.

Copy the code to Media section:
<img id="friendster-tweakers.com" width="0">&#x3C;script>
parent.document.body.style.borderTop="75px solid #000000";
parent.document.body.style.borderRight="75px solid #000000";
parent.document.body.style.borderBottom="75px solid #000000";
parent.document.body.style.borderLeft="75px solid #000000";
&#x3C;/script>

Specify the width, style (solid, groove, ridge, inset, outset) and color in the code above based on your preference. For the color attributes, you can refer to this web safe hexadecimal color pallete.