IE, Safari, and Firefox all deal with XML elements with namespaces in different

ways. I can't even make thigns work in *two* browsers at once -- what a pain.
So, we'll wrap up all the browser-specific stuff in 
OpenLayers.Ajax.getElementsByTagNameNS(), which contains the browser funkies,
and as a benefit, we get working WFS in IE.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@1650 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Ajax.js

@@ -300,3 +300,8 @@ OpenLayers.Ajax.Request.prototype = OpenLayers.Util.extend(new OpenLayers.Ajax.B
   }
 });
 
+OpenLayers.Ajax.getElementsByTagNameNS  = function(parentnode, nsuri, nsprefix, tagname) {
+    return parentnode.getElementsByTagNameNS ?
+        parentnode.getElementsByTagNameNS(nsuri, tagname)
+        : parentnode.getElementsByTagName(nsprefix + ':' + tagname);
+}