//SCROOL TO TOP
$(document).ready(function(){
	$(".btn_top").css("visibility" ,"visible");
	$(window).scroll(function(){  
		posScroll = $(document).scrollTop();
		  
		if(posScroll >=300)  
			$('.btn_top').fadeIn(550);  
		else  
			$('.btn_top').fadeOut(550);  
	});
	$('.btn_top').fadeOut(0);
});