$(document).ready(function(){
	$("span").bind("click", function(event){
		id=$(this).attr("data-id");
		$.ajax({ 
			url: "/",
			type: "POST",
			data: ("vote=" + id),
			dataType: "text",
			success: function(result){
				if (result == 'success'){
					num=Number($("#like_" + id).text())+1;
					$("#like_" + id).html('<span class="fa fa-thumbs-o-up up"></span> ' + num);
				}
			}
		});
	});
});


$(function(){
	$(window).scroll(function() {
		var top = $(document).scrollTop();
		if (top > 90) $('.floating').addClass('fixed');
		else $('.floating').removeClass('fixed');
	});
});

window.onload=function(){
	var scrollUp=document.getElementById('scrollup');
	scrollUp.onmouseover=function(){ scrollUp.style.opacity=0.2; scrollUp.style.filter='alpha(opacity=30)'; }
	scrollUp.onmouseout=function(){ scrollUp.style.opacity=0.4; scrollUp.style.filter='alpha(opacity=50)'; }
	scrollUp.onclick=function(){ window.scrollTo(0,0); }

	var scrollHeight=Math.max(
		document.body.scrollHeight, document.documentElement.scrollHeight,
		document.body.offsetHeight, document.documentElement.offsetHeight,
		document.body.clientHeight, document.documentElement.clientHeight);

	window.onscroll=function(){
		if(window.pageYOffset>0 && window.pageYOffset<(scrollHeight-screen.height-100)){ scrollUp.style.display='block'; } else { scrollUp.style.display='none'; }
	};
};