Hi,
I'll bet this is going to be a lot easier for some of you than it has been for me.

I have a map of the United States.
Each state is currently gray.
Each state is a symbol, and I can color them individually...but I don't want to.

I have a list of simple links that come from an xml file.
<record>
<state>Montana</state>
<category>Northern</category>
<question>National Park</question>
<response>Yes</response>
</record>

The list of links comes from <question>.
There are about forty of these.
All responses are either yes or no.

If the National Park link is clicked, I want the map to display with all states whose response to this question is yes to be colored blue.

I've tried several searches, but I haven't found anything that seems to apply. This could be because I'm not even sure how to begin.

Thanks for any help at all,
Debbie