* Fixed some unsafe for(... in ...) loops that do not take extensions to

  built-in type prototypes into account (which shop up in such loops).
  Added .hasOwnProperty checks there, also replaced parameter iteration
  in commands.js to a for-loop with a counter, rather than for-in.
* Added `close` method to WebSQL interface

mysql/commands.js

@@ -115,7 +115,10 @@ function cmd(handlers)
     // mixin all handlers  
     for (h in handlers)
     {
-        this[h] = handlers[h];
+        if(handlers.hasOwnProperty(h)) 
+        {
+            this[h] = handlers[h];
+        }
     }    
 
     // delegate to private EventEmitter member
@@ -371,15 +374,15 @@ function execute(sql, parameters)
                // todo: set types only on first call
                packet.add('\u0001');
                // todo: add numeric/datetime serialisers
-               for (var p in parameters)
+               for (var i = 0; i < parameters.length; i++)
                {
-                   if (parameters[p] != null)
+                   if (parameters[i] != null)
                        packet.int2(types.MYSQL_TYPE_VAR_STRING);
                }
-               for (var p in parameters)
+               for (var i = 0; i < parameters.length; i++)
                {
-                  if (parameters[p] != null)
-                       packet.lcstring(parameters[p].toString());
+                   if (parameters[i] != null)
+                       packet.lcstring(parameters[i].toString());
                }                          
            }
            this.write( packet ); 

mysql/constants.js

@@ -84,6 +84,9 @@ exports.type_names = {};
 
 for (var tname in exports.types)
 {
-   var type = exports.types[tname];
-   exports.type_names[type] = tname;
+   if(exports.types.hasOwnProperty(tname) )
+   {
+       var type = exports.types[tname];
+       exports.type_names[type] = tname;
+   }
 }

mysql/websql.js

@@ -55,5 +55,6 @@ exports.openDatabase = function(db, user, password)
             commit.sql = t.clean ? "COMMIT" : "ROLLBACK"
        });
     }
+    webdb.close = function() { connection.close(); };
     return webdb;
 }