yp_oas_url = "http://oascentral.yellowpages.com/RealMedia/ads/";
yp_oas_listpos = "Top,Middle,Bottom1";
yp_oas_rn = "01234567890";
yp_oas_rns = "1234567890";
yp_oas_rn = new String(Math.random());
yp_oas_rns = yp_oas_rn.substring(2,11);
function yp_oas_iframe_ad(position) {
if (position == 'Top') {
width = 468;
height = 60;
}
else if (position == 'Middle') {
width = 300;
height = 250;
}
else if (position == 'Bottom') {
position = 'Bottom1';
width = 728;
height = 90;
}
else if (position == 'Bottom1') {
width = 728;
height = 90;
}
else {
return;
}
document.write('<iframe width="' + width + '" height="' + height + '" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no" bordercolor="#000000" src="' + yp_oas_url + 'adstream_sx.ads/' + yp_oas_sitepage + '/1' + yp_oas_rns + '@' + position + '"></iframe>'); 
}