var bb_blog = bb_blog || {};
bb_blog.ads = [
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=babyregistry&banner=1N7ATXVTVJ1WGBB0E902&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>',
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=gourmet&banner=0DSWRZ5A2FXV23WJNK02&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>',
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=grocery&banner=05X4DEHFYGH2RDXRDWR2&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>',
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=toysandgames&banner=0DZ87J1RZZ7ZHBQ3TWR2&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>',
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=baby&banner=0AAVNB1AGGFK2ESGK202&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>',
'<iframe src="http://rcm.amazon.com/e/cm?t=jc-20&o=1&p=48&l=ur1&category=baby&banner=0431DGNH3WM2KF1A4F82&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>'
];

bb_blog.getNextAd = function(){
   var num_ads = this.ads.length;
   var rand = Math.floor(Math.random() * num_ads);
   return this.ads[rand];
};