使用asp.Net自带ajax出现的问题：

使用ScriptMange，就出现了“Microsoft JScript runtime error: 'Sys' is undefined”的错误，并且调试还报不能调试数据：查了查资料，查到了是这个原因：

<system.web>

<compilation debug="true" targetFramework="4.0" />

<httpHandlers>

<remove verb="*" path="*.asmx"/>

<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory"/>

<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>

</httpHandlers>

</system.web>

参考解决方法地址： http://topic.csdn.net/u/20071217/11/896ad660-53dc-48ec-a614-e518cb71ddad.html ; http://hi.baidu.com/xiajiok/blog/item/0d46eddcac0c13a4cd1166e9.html
// if ($ != jQuery) {
$ = jQuery.noConflict();
}
var isLogined = true;
var cb_blogId = 34015;
var cb_entryId = 1152555;
var cb_blogApp = "zhonghua-sun";
var cb_blogUserGuid = "6f2e420b-63cf-dd11-9e4d-001cf0cd104b";
var cb_entryCreatedDate = '2008/4/14 12:25:00';
// ]]>