function cart_q(){//默认加载购物车
	$.ajax({
		type:"POST",
		url:"cart_q.php",
		data:"action=default&num="+Math.round(Math.random()*10000),
		success:function(cart_data){
			$("#shop_cart").html(cart_data);
		}
	});
}


function click_cart(id){//添加商品到购物车
	$.ajax({
		type:"POST",
		url:"cart_q.php",
		data:"id="+id+"&action=add&num="+Math.round(Math.random()*10000),
		success:function(){
			cart_q();
		}
	});
}