function startFx(){
	var status = {
		'true': 'open',
		'false': 'close'
	};
	var myHorizontalSlide = new Fx.Slide('horizontal_slide', {mode: 'horizontal'});
	
	myHorizontalSlide.hide();	
	
	$('busca').addEvent('focus', function(e){
		e.stop();
		myHorizontalSlide.slideIn();
	});
	
	$('busca').addEvent('blur', function(e){
		e.stop();
		myHorizontalSlide.slideOut();
	});
	
	myHorizontalSlide.addEvent('complete', function() {
		if(status[myHorizontalSlide.open]=='open')
			document.getElementById('bt-buscar').src = "blog/images/bt-buscar-close.jpg";
		else
			document.getElementById('bt-buscar').src = "blog/images/bt-buscar.jpg";
	});	
}