//调用WebService
$.postJSON = function(url, data, success, error) {
	$.ajax({
		type: "POST", //访问WebService使用Post方式请求
		contentType: "application/json;charset=utf-8", //WebService 会返回Json类型
		url: url,//"http://192.168.11.126:8099/PPVisionServer.asmx/GetBranchByID", //调用WebService
		data: JSON.stringify(data),//"{type:3,id:123,step:1}", 
		dataType: 'json',
		//beforeSend: function(x) { x.setRequestHeader("Content-Type", "application/json; charset=utf-8"); },
		error: error,
		success: success //function(response){var json = response.d;}
	});
};