Updating the date tests to work against Firefox 6 (and any other implementations that throw RangeError). closes #3461

git-svn-id: http://svn.openlayers.org/trunk/openlayers@12254 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/BaseTypes/Date.html

@@ -20,7 +20,15 @@
         
         // check invalid date
         date = new Date("foo");
-        str = OpenLayers.Date.toISOString(date);
+        try {
+            str = OpenLayers.Date.toISOString(date);
+        } catch (err) {
+            // some implementations throw RangeError
+            // see https://bugzilla.mozilla.org/show_bug.cgi?id=649575
+            if (err instanceof RangeError) {
+                str = "Invalid Date";
+            }
+        }
         t.eq(str, "Invalid Date", "invalid date");
 
     }