making pink tiles a css matter. p=rdewit, r=me (closes #2318)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9758 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

examples/split-feature.html

@@ -4,10 +4,15 @@
         
         <link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
         <link rel="stylesheet" href="style.css" type="text/css" />
+        <style>
+            /* avoid pink tiles */
+            .olImageLoadError {
+                background-color: transparent !important;
+            }
+        </style>
         <script src="../lib/OpenLayers.js"></script>
         <script type="text/javascript">
             var map, vectors, split;
-            OpenLayers.Util.onImageLoadErrorColor = "transparent";
             function init(){
                 map = new OpenLayers.Map('map');