Reorganize number.js.

src/number.js

@@ -1,27 +1,51 @@
-Object.extend(Number.prototype, {
-  toColorPart: function() {
+Object.extend(Number.prototype, (function() {
+  function toColorPart() {
     return this.toPaddedString(2, 16);
-  },
+  }
 
-  succ: function() {
+  function succ() {
     return this + 1;
-  },
+  }
 
-  times: function(iterator, context) {
+  function times(iterator, context) {
     $R(0, this, true).each(iterator, context);
     return this;
-  },
+  }
 
-  toPaddedString: function(length, radix) {
+  function toPaddedString(length, radix) {
     var string = this.toString(radix || 10);
     return '0'.times(length - string.length) + string;
-  },
+  }
 
-  toJSON: function() {
+  function toJSON() {
     return isFinite(this) ? this.toString() : 'null';
   }
-});
-
-$w('abs round ceil floor').each(function(method){
-  Number.prototype[method] = Math[method].methodize();
-});
+
+  function abs() {
+    return Math.abs(this);
+  }
+
+  function round() {
+    return Math.round(this);
+  }
+
+  function ceil() {
+    return Math.ceil(this);
+  }
+
+  function floor() {
+    return Math.floor(this);
+  }
+
+  return {
+    toColorPart:    toColorPart,
+    succ:           succ,
+    times:          times,
+    toPaddedString: toPaddedString,
+    toJSON:         toJSON,
+    abs:            abs,
+    round:          round,
+    ceil:           ceil,
+    floor:          floor
+  };
+})());