Calling a function/procedure from a column link in a report

Here's what I'm trying to do. I have a hidden page item variable that stores my security settings as a string like so:
SETTING_1:SETTING_2:SETTING_3:SETTING_4I have a report that prints out security settings for our site. What I want to do is make this report have 2 columns. The left column is the security setting in plain text, and I want the right column to be a link where if the user clicks on it, it deletes the value from the page item variable string (from where I store all the security settings). I tried searching the boards and the APEX docs, but couldn't find anything on how to make that right column a link to achieve what I'm trying to do. Any thoughts on how to do this?

Never mind. I figured out a workaround for this. I made the link in the right column a call to a javascript popup window where I pass in the value I want to remove. In this new page, I perform the string removal and close the popup and reload the original window. Not sure if it's the easiest or best method but it works.

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