//首页数字滚动
$(function() {
	var $timer = $('.index-num'),
		height = $win.height();

	if(!$timer.length) return;

	var scrollHandler = function(event) {
		var top = $timer.offset().top + 300;
		if(top > ($win.scrollTop() + height)) return;

		$win.off('scroll', scrollHandler);
		$('.timer', $timer).countTo({
			formatter: function(value, options) {
				var num = value.toFixed(options.decimals);
				return num;

			}
		});
	};

	$win.on('scroll', scrollHandler);