You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You create a Web form by using ASP.NET AJAX. 
The Web form contains the following code fragment. （Line numbers are included for reference only.） 
| English | Chinese | Japan | Korean | - 149 - Test Information Co.， Ltd. All rights reserved. 01 <script type="text/javascript"> 
02 
03 Sys.Application.add_init（initComponents）； 
04 
05 function initComponents（） { 
06 
07 } 
08 
09 </script> 
10 
11 <asp：ScriptManager ID="ScriptManager1" 
12 runat="server" /> 
13 <asp：TextBox runat="server" ID="TextBox1" /> 
You need to create and initialize a client behavior named MyCustomBehavior by using the 
initComponents function. You also need to ensure that MyCustomBehavior is attached to the TextBox1 Textbox control. 
Which code segment should you insert at line 06？（）

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You create a Web form by using ASP.NET AJAX. 
You write the following client-script code fragment to handle the exceptions thrown from asynchronous 
postbacks. （Line numbers are included for reference only.） 
01 <script type="text/javascript"> 02 function pageLoad（） 
03 { 
04 var pageMgr = 
05 Sys.WebForms.PageRequestManager.getInstance（）； 
06 
07 } 
08 
09 function errorHandler（sender， args） 
10 { 
11 
12 } 
13 </script> 
You need to ensure that the application performs the following tasks： 
&iexcl；¤Use a common clien-script function named errorHandler.
&iexcl；¤Update a Label control tat has an ID named lblError with the error message. &iexcl；¤Prevent the browser from displaying any message box or Javascript error 
What should you do？（）