function cargarTips()
{
	Window.onDomReady(function() {
		
		var Tips2 = new Tips($$('a','button') ,  {
			maxTitleChars: 50,
			initialize:function(){
				this.fx = new Fx.Style(
					this.toolTip, 'opacity').set(0);},					
			onShow: function(toolTip) {
				this.fx.start(1);
			},
			onHide: function(toolTip) {
				this.fx.start(0);
			}
		});		
	});
}