2 sets of points & markers
I'm glad it's possible. Now for the execution. Currently, the map has one pull-down menu, which calls the data points by county. I think what I'm being asked to do is create a second pull-down menu, to access other lat/long data points by watershed/region. Data from the 2 pull-down menus will display with 2 styles of markers. Data from both pull-down menus should display data on the same map.
Keeping in mind I'm brand-new at php code, how do I go about
1) setting-up markers that correspond with the items in one menu versus the other, and
2) ensuring that a user's choices from both pull-down menus are displayed simultaneously
In case it helps, the site is at eagleData.php but you need to register/login to view.