Avoiding unnecessary repeated checks of navigator.userAgent. The constants added here should not be used outside the library. In the future, they should be removed from the library. r=ahocevar (closes #2911)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10868 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/EventPane.js

@@ -102,7 +102,7 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
         this.pane.style.display = this.div.style.display;
         this.pane.style.width="100%";
         this.pane.style.height="100%";
-        if (OpenLayers.Util.getBrowserName() == "msie") {
+        if (OpenLayers.BROWSER_NAME == "msie") {
             this.pane.style.background = 
                 "url(" + OpenLayers.Util.getImagesLocation() + "blank.gif)";
         }