text: (function() {
  
     var inputEx = YAHOO.inputEx;
  
  /**
   * @class Adds an IPv4 address regexp
   * @extends inputEx.StringField
   * @constructor
   * @param {Object} options inputEx.Field options object
   */
  inputEx.IPv4Field = function(options) {
  	inputEx.IPv4Field.superclass.constructor.call(this,options);
  };
  YAHOO.lang.extend(inputEx.IPv4Field, inputEx.StringField, 
  /**
   * @scope inputEx.IPv4Field.prototype   
   */   
  {
     
     /**
      * set IPv4 regexp and invalid string
      * @param {Object} options Options object (inputEx inputParams) as passed to the constructor
      */
     setOptions: function(options) {
        inputEx.IPv4Field.superclass.setOptions.call(this, options);
        this.options.messages.invalid = inputEx.messages.invalidIPv4;
        this.options.regexp = /^(?:1\d?\d?|2(?:[0-4]\d?|[6789]|5[0-5]?)?|[3-9]\d?|0)(?:\.(?:1\d?\d?|2(?:[0-4]\d?|[6789]|5[0-5]?)?|[3-9]\d?|0)){3}$/;
     }
    
  });
  
  // Specific message for the email field
  inputEx.messages.invalidIPv4 = "Invalid IPv4 address, ex: 192.168.0.1";
  
  /**
   * Register this class as "IPv4" type
   */
  inputEx.registerType("IPv4", inputEx.IPv4Field);
  
  })();