capture dynamic value present in a pop up window in ajax true client

Hi,
currently i am facing difficulty in capturing the dynamic value in pop window. Actually in my web application, every time after creating an issue, a pop window comes on top right corner of the screen showing "issue name with ID" like "PerfID 23" and every time i create the issue the issue ID increased by 1. In that pop window, i have to click on that "PerfID 23" link to open the issue. one more thing ,the pop up mesasge only last for 3 second on the screen. i recorded the script but while replying it not able to click on the "PerfID23" link, because its the ID number gets increased by 1.
So how to solve this issue kindly help me out.