Jquery Coda Bubble issue

Jquery Coda Bubble issue

Hi folks,

i am having an issue with the jquery bubble window..

i.e.

check this link:
http://jqueryfordesigners.com/demo/coda-bubble.html

i am using the bubble in <div>.

i want to display the bubble at bottom level..if there is a single <div> then it is coming perfect but when i have multiple<div> then the layer is showing transperant..
how to resolve this?

Please check the screen shot
http://img140.imageshack.us/img140/6880/bubblee.jpg