Getting data from MySql table with no refresh

Hello,
I have a code that counts down and when the countdown reaches 0 I want it to grab data from a MySql table and present it on the page without reloading.
I know my countdown works, but it is when I add the code to get the data from the PHP page it stops working. I know my PHP page works and grabs the correct data and presents it.
Here is the code I am currently using, row 40, 41 and 42 are the lines that I added to try and get the PHP data. Any ideas? Thanks.

Code (text):

<div id="countmesg">…

Getting data from MySql table with no refresh

See original post by leequery