function OAS_RICH(position) {
if (position == 'TopBanner') {
document.write ('<IFRAME SRC="http://ad.howstuffworks.com/RealMedia/ads/adstream_sx.ads/www.howstuffworks.com/adnetwork/ird/adv728x90ros2.htm/sx@TopBanner" WIDTH=728 HEIGHT=90 FRAMEBORDER=0 MARGINWIDTH=0 MARGINHEIGHT=0 SCROLLING=NO>\n');
document.write ('<A HREF="http://ad.howstuffworks.com/RealMedia/ads/adstream_nx.ads/www.howstuffworks.com/adnetwork/ird/adv728x90ros2.htm/nx@TopBanner" TARGET=_BLANK>\n');
document.write ('<IMG SRC="http://ad.howstuffworks.com/RealMedia/ads/adstream_nx.ads/www.howstuffworks.com/adnetwork/ird/adv728x90ros2.htm/nx@TopBanner" WIDTH=728 HEIGHT=90 BORDER=0></A></IFRAME>');
}
}