With the mortgage market reeling from massive loan defaults, analysts are now predicting disaster for the banner ad industry. 'Those eye-catching dancing motions on our nation's web pages are in dire jeopardy,' said editor Brian Weingrad of the industry trade publication Banner AdWeek on Monday. 'The reassuring sight of a smiling African-American woman jumping up and down and screaming with excitement could soon be a thing of the past.' The collapse is considered the worst crisis in online business since the Great Flash Animation Shortage of 2003 nearly wiped out that year's pop-up crop. 