window.addEvent('domready', function()
{
  var myTip = new Tips($$('.myTip'),
	{
	  initialize:function()
		{
		  this.fx = new Fx.Style(this.toolTip, 'opacity', {duration: 500, wait: false}).set(0);
		},
		onShow: function(toolTip)
		{
			this.fx.start(1);
		},
		onHide: function(toolTip)
		{
			this.fx.start(0);
		}
	});
});