Fix from gregers, patch cleaned up by Erik for, "Util.getRenderedSize does not

calculate with inherited style". Includes manual regression test. r=me, (Closes
#1906). CLA on file.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@8906 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Popup.js

@@ -484,8 +484,14 @@ OpenLayers.Popup = OpenLayers.Class({
         var preparedHTML = "<div class='" + this.contentDisplayClass+ "'>" + 
             this.contentDiv.innerHTML + 
             "<div>";
+ 
+        var containerElement = (this.map) ? this.map.layerContainerDiv
+        								  : document.body;
         var realSize = OpenLayers.Util.getRenderedDimensions(
-            preparedHTML, null, { displayClass: this.displayClass }
+            preparedHTML, null,	{
+                displayClass: this.displayClass,
+                containerElement: containerElement
+            }
         );
 
         // is the "real" size of the div is safe to display in our map?
@@ -514,8 +520,10 @@ OpenLayers.Popup = OpenLayers.Class({
                 //content is clipped in only one direction, so we need to 
                 // run getRenderedDimensions() again with a fixed dimension
                 var clippedSize = OpenLayers.Util.getRenderedDimensions(
-                    preparedHTML, fixedSize, 
-                    { displayClass: this.contentDisplayClass }
+                    preparedHTML, fixedSize, {
+                        displayClass: this.contentDisplayClass,
+                        containerElement: containerElement
+                    }
                 );
                 
                 //if the clipped size is still the same as the safeSize,