ordering <exclamation point/>. you can now gracefully z-order your vectors... and you can even 'yOrder' them and add background images, making for a nice 3dish look. be sure to check out the two new example html's: marker-shadow.html and ordering.html. Big thanks to tcoulter (funkyc) for a prolonged effort with this patch. It has come a long way and now what a beautiful finish. (Closes #1357)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@7652 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Vector.js

@@ -152,6 +152,13 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
      * {<OpenLayers.Renderer>}
      */
     renderer: null,
+    
+    /**
+     * APIProperty: yOrdering
+     * {String} Whether or not externalGraphic y-ordering is enabled on this 
+     *     layer. Default is false.
+     */
+    yOrdering: false,
    
     /** 
      * APIProperty: geometryType
@@ -252,8 +259,8 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
         for (var i=0, len=this.renderers.length; i<this.renderers.length; i++) {
             var rendererClass = OpenLayers.Renderer[this.renderers[i]];
             if (rendererClass && rendererClass.prototype.supported()) {
-               this.renderer = new rendererClass(this.div);
-               break;
+                this.renderer = new rendererClass(this.div, this.yOrdering);
+                break;
             }  
         }  
     },
@@ -332,7 +339,7 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
             this.renderer.setExtent(extent);
             
             this.renderer.root.style.visibility = "visible";
-			
+
             // Force a reflow on gecko based browsers to prevent jump/flicker.
             // This seems to happen on only certain configurations; it was originally
             // noticed in FF 2.0 and Linux.