reverted r10125, which does not fix the described issue, and store style.display instead (first patch attached to #2414). r=bartvde,elemoine (pullup #2414)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10276 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/BaseTypes/Element.js

@@ -93,7 +93,6 @@ OpenLayers.Element = {
 
     /**
      * APIFunction: getDimensions
-     * *Deprecated*. Returns dimensions of the element passed in.
      *  
      * Parameters:
      * element - {DOMElement}

lib/OpenLayers/Map.js

@@ -1402,6 +1402,12 @@ OpenLayers.Map = OpenLayers.Class({
         var size = new OpenLayers.Size(this.div.clientWidth, 
                                        this.div.clientHeight);
 
+        // Workaround for the fact that hidden elements return 0 for size.
+        if (size.w == 0 && size.h == 0 || isNaN(size.w) && isNaN(size.h)) {
+            var dim = OpenLayers.Element.getDimensions(this.div);
+            size.w = dim.width;
+            size.h = dim.height;
+        }
         if (size.w == 0 && size.h == 0 || isNaN(size.w) && isNaN(size.h)) {
             size.w = parseInt(this.div.style.width);
             size.h = parseInt(this.div.style.height);