Commit changes to code for skinning, including doc/customization, which

documents the class style naming for OL, although it isn't implemented yet,
so that we have a standard to work against. Update release scripts, tests,
and create a 'theme' directory which will hold theme information as it is
developed.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@1639 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -111,6 +111,8 @@ OpenLayers.Map.prototype = {
     /** @type int */
     numZoomLevels: 16,
 
+    /** @type string */
+    theme: null,
 
     /**
      * @constructor
@@ -158,6 +160,12 @@ OpenLayers.Map.prototype = {
         
         //set the default options
         this.setOptions(options);
+        
+        var cssNode = document.createElement('link');
+        cssNode.setAttribute('rel', 'stylesheet');
+        cssNode.setAttribute('type', 'text/css');
+        cssNode.setAttribute('href', this.theme);
+        document.getElementsByTagName('head')[0].appendChild(cssNode); 
 
         this.layers = [];
         
@@ -217,6 +225,9 @@ OpenLayers.Map.prototype = {
         
         this.maxExtent = new OpenLayers.Bounds(-180, -90, 180, 90);
 
+        this.theme = OpenLayers._getScriptLocation() + 
+                             'theme/default/style.css'; 
+
         // now add the options declared by the user
         //  (these will override defaults)
         OpenLayers.Util.extend(this, options);