>>>>>>The Global.asax be default has several methods (e.g. Application_Start, Session_Start, and so on). I need to add the ScriptManager call (as shown below) to the Global.asax
>>>>>>
>>>>>>

>>>>>>ScriptManager.ScriptResourceMapping.AddDefinition("jquery", new ScriptResourceDefinition {
>>>>>>
>>>>>>                Path = "~/scripts/jquery-1.4.1.min.js",
>>>>>>
>>>>>>                DebugPath = "~/scripts/jquery-1.4.1.js",
>>>>>>
>>>>>>                CdnPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.min.js",
>>>>>>
>>>>>>                CdnDebugPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.js"
>>>>>>
>>>>>>            });
>>>>>>

>>>>>>
>>>>>>In which method of Global.asax.cs the above code should go? TIA
>>>>>
>>>>>Answer: this code goes to Application_Start method.
>>>>
>>>>This was a good answer on my PC (running the application from VS 2012). But when I deploy this project on customer site I get the same dreaded message:
>>>>

>>>>WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a  ScriptResourceMapping named 
>>>>jquery(case-sensitive). 
>>>>

>>>>So apparently my Global.asax.cs is not the right place. Where else do I specify "ScriptManager.ScriptResourceMapping"?
>>>
>>>Docs say in Application_Start. Where did you put it? And did you reference it in markup ?
>>>
>>>http://msdn.microsoft.com/en-us/library/system.web.ui.scriptmanager.scriptresourcemapping(v=vs.110).aspx
>>
>>When you are saying "markup" do you mean this:
>>
>>

>><asp:ScriptManager ID="sm1" runat="server">
>>  <Scripts>
>>    <asp:ScriptReference Name="jquery"/>
>>  </Scripts>
>></asp:ScriptManager>
>>

>>
>>If Yes, does the above go to the ASPX page?
>>
>>Thank you.
>
>I've never used it but, according to the link :
>"In the markup for an ASP.NET Web Forms page (.aspx file), add the following markup inside the form element and before any elements or code that uses jQuery script."

Unfortunately adding the code and the markup - EXACTLY - as it says in the article you referenced, didn't resolve the problem.
But thank you very much for your suggestion.