Pulled up r679:r684 from trunk for the IE performance and bug fixes.

git-svn-id: http://svn.openlayers.org/branches/openlayers/1.0@685 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Tile/Image.js

@@ -35,12 +35,20 @@ OpenLayers.Tile.Image.prototype =
 
     /**
     */
-    draw:function() {
-        this.imgDiv = OpenLayers.Util.createAlphaImageDiv(null,
-                                                       this.position,
-                                                       this.size,
-                                                       this.url,
-                                                       "absolute");
+    draw:function(transparent) {
+        if (transparent) {
+            this.imgDiv = OpenLayers.Util.createAlphaImageDiv(null,
+                                                           this.position,
+                                                           this.size,
+                                                           this.url,
+                                                           "absolute");
+        } else {
+            this.imgDiv = OpenLayers.Util.createImage(null,
+                                                      this.position,
+                                                      this.size,
+                                                      this.url,
+                                                      "absolute");
+        }
         this.layer.div.appendChild(this.imgDiv);
     },