var PulseFade = new Class({
      
//implements
Implements: [Options,Events],	

//options
options: {
	min: 0,
	max: 1,
	duration: 200,
	times: 999999999
},

//initialization
initialize: function(el,options) {
	//set options
	this.setOptions(options);
	this.element = $(el);
	this.times = 0;
},

//starts the pulse fade
start: function(times) {
	if(!times) times = this.options.times * 2;
	this.running = 1;
	this.fireEvent('start').run(times -1);
},

//stops the pulse fade
stop: function() {
	this.running = 0;
	this.fireEvent('stop');
},

//runs the shizzle
run: function(times) {
//make it happen
var self = this;
var to = self.element.get('opacity') == self.options.min ? self.options.max : self.options.min;
self.fx = new Fx.Tween(self.element,{
  duration: self.options.duration / 2,
  onComplete: function() {
	self.fireEvent('tick');
	if(self.running && times)
	{
	  self.run(times-1);
	}
	else
	{
	  self.fireEvent('complete');
	}
  }
}).start('opacity',to);
}
});