(function($){
var valnull = function(parent, options){
  this._class  = valnull;
  this.parent  = parent;
  this.test = this.parent.val();
  
  this.setupFocusin();
  this.setupFocusout();
};

valnull.fn = valnull.prototype;

valnull.fn.setupFocusin = function(){
  this.parent.focusin($.proxy(function(){
 	if(this.parent.val()=='Email' || this.parent.val()=='Password' || this.parent.val()=='UserName'){  this.parent.val("");	}	
  }, this));
};

valnull.fn.setupFocusout = function(){
  this.parent.focusout($.proxy(function(){
	if(this.parent.val()==''){ this.parent.val(this.test);	}							 
  }, this));
};


$.fn.valnull = function(options, callback){
  return(new valnull(this, options));
};

window.valnull = valnull;

})(jQuery);