allow for user to set the sizing method. make default 'scale'. set to 'crop' as desired for panzoombar in r396. removed outdated tests

git-svn-id: http://svn.openlayers.org/trunk/openlayers@401 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/PanZoomBar.js

@@ -76,7 +76,7 @@ OpenLayers.Control.PanZoomBar.prototype =
             div = OpenLayers.Util.createAlphaImageDiv(id, centered,
                                       new OpenLayers.Size(sz.w, zoomStopSize),
                                       imgLocation + "zoombar.png", 
-                                      "absolute");
+                                      "absolute", null, "crop");
             div.style.height = sz.h;
         } else {
             div = OpenLayers.Util.createDiv(

lib/OpenLayers/Util.js

@@ -705,13 +705,14 @@ OpenLayers.Util.alphaHack = function() {
 * @param {String} imgURL
 * @param {String} position
 * @param {String} border
+* @param {String} sizing 'crop', 'scale', or 'image'. Default is "scale"
 *
 * @returns A DOM Div created with a DOM Image inside it. If the hack is 
 *           needed for transparency in IE, it is added.
 * @type DOMElement
 */ 
 OpenLayers.Util.createAlphaImageDiv = function(id, px, sz, imgURL, 
-                                               position, border) {
+                                               position, border, sizing) {
     
     var div = OpenLayers.Util.createDiv(id, px, sz);
     var img = OpenLayers.Util.createImage(id + "_innerImage", null, sz, 
@@ -720,8 +721,12 @@ OpenLayers.Util.createAlphaImageDiv = function(id, px, sz, imgURL,
 
     if (OpenLayers.Util.alphaHack()) {
         div.style.display = "inline-block";
+        if (sizing == null) {
+            sizing = "scale";
+        }
         div.style.filter = "progid:DXImageTransform.Microsoft" +
-                                 ".AlphaImageLoader(src='" + imgURL + "', sizingMethod='crop')";
+                           ".AlphaImageLoader(src='" + imgURL + "', " +
+                           "sizingMethod='" + sizing + "')";
         img.style.filter = "progid:DXImageTransform.Microsoft" +
                                 ".Alpha(opacity=0)";
     }