One of the classical challenges when working with maps is - How to set a map with two content layers, each with it's own markers color ( with no code involved ).
We'll use the OpenLayers module that bringing the OpenLayers JavaScript library into Drupal.
Although it's most convenient to work with, settings are not always trivial and can be a bit confusing at the beginning. We'll try to go over the settings process and pass through all obstacles.
Drupal core - Drupal 6.x
Modules – Content Construction Kit (CCK), Views, OpenLayers
