diff --git a/lib/OpenLayers/Util.js b/lib/OpenLayers/Util.js
index 59138b11bc..749942f12d 100644
--- a/lib/OpenLayers/Util.js
+++ b/lib/OpenLayers/Util.js
@@ -185,8 +185,7 @@ OpenLayers.Util.modifyAlphaImageDiv = function(div, id, px, sz, imgURL,
     OpenLayers.Util.modifyDOMElement(img, div.id + "_innerImage", null, sz, 
                                      "relative", border);
     if (opacity) {
-        div.style.opacity = opacity;
-        div.style.filter = 'alpha(opacity=' + (opacity * 100) + ')';
+        OpenLayers.Util.setOpacity(div, opacity);
     }
     
     if (OpenLayers.Util.alphaHack()) {