div外层点击关闭

gistfile1.txt

// 弹层
	document.onclick = function(e){
        $('.product_info').removeClass('cur');
    }

    $('.product_info').click(function(e){
        e = e||event; stopFunc(e);
    });

	$(".arrow-link").click(function(e) {
		$('.product_info').toggleClass('cur');
		e = e||event; stopFunc(e);
	});

	function stopFunc(e){   
	    e.stopPropagation?e.stopPropagation():e.cancelBubble = true;       
	}