OpenLayers has many different Layer classes, each allowing you to connect to a different type of map server 'back end.' For example, if you wanted to connect to a WMS map server, you would use the
Layer.WMS class, and if you wanted to use Google Maps you'd use the
Layer.Google class. Each layer object is independent of other layer objects, so doing things to one layer won't necessarily affect the other.
How many layers can I have?
The safest maximum amount of layers you can have on a map at one time depends largely ...